chore: Update doc URLs in plugin readmes (#2622)

Author: rpbourret

plugins/field-colour-hsv-sliders/README.md

@@ -20,7 +20,7 @@ npm install @blockly/field-colour-hsv-sliders --save
 
 ## Usage
 
-This plugin adds a field type `FieldColourHsvSliders` that is registered to the name `'field_colour_hsv_sliders'`. This field is an extension of the `Blockly.FieldColour` field and outputs values in the same hexadecimal string format `'#rrggbb'` even though the UI represents the colour in the HSV colour space. See the [Blockly.FieldColour documentation](https://developers.google.com/blockly/guides/create-custom-blocks/fields/built-in-fields/colour#creation) on what parameters and configurations this field supports, although unlike `Blockly.FieldColour`, this field does not use colour swatches and thus ignores options related to the swatches such as `'colourOptions'`.
+This plugin adds a field type `FieldColourHsvSliders` that is registered to the name `'field_colour_hsv_sliders'`. This field is an extension of the `Blockly.FieldColour` field and outputs values in the same hexadecimal string format `'#rrggbb'` even though the UI represents the colour in the HSV colour space. See the [Blockly.FieldColour documentation](https://www.npmjs.com/package/@blockly/field-colour#creation) on what parameters and configurations this field supports, although unlike `Blockly.FieldColour`, this field does not use colour swatches and thus ignores options related to the swatches such as `'colourOptions'`.
 
 The UI also provides an eye dropper button that can be used to take a colour from anywhere on the screen [on supported platforms](https://caniuse.com/?search=eyedropper). Chrome, Edge, and Opera support the eye dropper feature, except [on Chromebooks](https://bugs.chromium.org/p/chromium/issues/detail?id=1348921) and on mobile devices. There is also [a known bug in Chrome on some versions of Linux](https://bugs.chromium.org/p/chromium/issues/detail?id=1227633) where the eye dropper may be visible but does not work correctly.
 

plugins/field-colour/README.md

@@ -189,7 +189,7 @@ Blockly.Extensions.register('set_colours_extension', function () {
 ```
 
 This is done using a JSON
-[extension](https://developers.google.com/blockly/guides/create-custom-blocks/extensions).
+[extension](https://developers.google.com/blockly/guides/create-custom-blocks/define/extensions).
 
 #### JavaScript
 
@@ -282,22 +282,20 @@ colourBlend.installBlock({
 
 #### Message files and locales
 
-The blocks in this package contain text that can be
-[localized](https://developers.google.com/blockly/guides/create-custom-blocks/localize-blocks)
-into multiple languages. As of August 2024, the relevant messages are
-included in the core Blockly language files.
+The blocks in this package contain text that can be localized into multiple
+languages. As of August 2024, the relevant messages are included in the core
+Blockly language files. For information on Blockly's approach to localization,
+see [Localization](https://developers.google.com/blockly/guides/configure/web/translations)
+in the developer's guide.
 
 If your blocks show `%{BKY_COLOUR_BLEND_TITLE}` or similar text instead
 of the expected text, make sure that you either:
 
-- Import the [default Blockly modules](https://developers.google.com/blockly/guides/configure/web/translations#import_blockly_default_modules),
-  which includes the English langfiles, or
-- Explicitly [import a language](https://developers.google.com/blockly/guides/configure/web/translations#import_blockly_languages)
-  and call `setLocale` before using these blocks.
+- Import the default Blockly modules, which includes the English langfiles, or
+- Explicitly import a language and call `setLocale` before using these blocks.
 
-For more information on Blockly's approach to localization, see the
-[Localize Blocks](https://developers.google.com/blockly/guides/create-custom-blocks/localize-blocks)
-developer guide.
+For more information, see [Load a Blockly localization
+table](https://developers.google.com/blockly/guides/configure/web/translations#load-blockly).
 
 ### API Reference
 

plugins/field-dependent-dropdown/README.md

@@ -22,7 +22,7 @@ This plugin adds a field type `FieldDependentDropdown` that is an extension of `
 
 These changes are recorded properly in the undo history, and the fields can be [serialized and later deserialized](https://developers.google.com/blockly/guides/configure/web/serialization) while preserving their options, values, and validity. You can also create chains of dependent dropdowns that depend on other dependent dropdowns.
 
-Note that the parent field must be attached to the block before the child field, and the child field will attach a validator function to the parent field to intercept changes to its value. If you want to add your own [custom field validator](https://developers.google.com/blockly/guides/create-custom-blocks/fields/validators) to the parent field, you need to use [the JavaScript API to define your block](https://developers.google.com/blockly/guides/create-custom-blocks/define-blocks#json_format_versus_javascript_api) and [pass your validator to the parent field's constructor](https://developers.google.com/blockly/guides/create-custom-blocks/fields/built-in-fields/dropdown#creating_a_dropdown_validator). If you try to set the parent's validator later, you'll overwrite the one added by this plugin.
+Note that the parent field must be attached to the block before the child field, and the child field will attach a validator function to the parent field to intercept changes to its value. If you want to add your own [custom field validator](https://developers.google.com/blockly/guides/create-custom-blocks/fields/validators) to the parent field, you need to use [the JavaScript API to define your block](https://developers.google.com/blockly/guides/create-custom-blocks/define/json-and-js) and [pass your validator to the parent field's constructor](https://developers.google.com/blockly/guides/create-custom-blocks/fields/built-in-fields/dropdown#creating_a_dropdown_validator). If you try to set the parent's validator later, you'll overwrite the one added by this plugin.
 
 To create a dependent dropdown, you'll need to add this field type to a block definition, and add that block to your toolbox. See below for an example of defining a block that uses this field.
 

plugins/theme-modern/README.md

@@ -1,7 +1,7 @@
 # @blockly/theme-modern [![Built on Blockly](https://tinyurl.com/built-on-blockly)](https://github.com/google/blockly)
 
 A [Blockly](https://www.npmjs.com/package/blockly) modern theme that uses the
-same block colours as the [Classic theme](https://github.com/google/blockly/blob/master/core/theme/classic.js)
+same block colours as the [Classic theme](https://github.com/google/blockly/blob/master/core/theme/classic.ts)
 but with darker borders. This theme was designed to be used with the Thrasos or
 Zelos renderer.
 

plugins/toolbox-search/README.md

@@ -2,7 +2,7 @@
 
 A [Blockly](https://www.npmjs.com/package/blockly) plugin that adds a toolbox category for searching
 blocks. The category displays a search field in the toolbox, and filters the available blocks as you
-type. The Blockly docs have [more information about toolbox definitions and categories](https://developers.google.com/blockly/guides/configure/web/toolbox#categories).
+type. The Blockly docs have [more information about toolbox definitions and categories](https://developers.google.com/blockly/guides/configure/web/toolboxes/category).
 
 ## Installation