chore: update unblock this contact string

Author: Bilb

tests/automation/enforce_localized_str.spec.ts

@@ -105,7 +105,7 @@ function getExpectedStringFromKey(
     case 'block':
       return 'Block';
     case 'blockBlockedDescription':
-      return 'Unblock this contact to send a message.';
+      return 'Unblock this contact to send a message';
     case 'attachmentsClickToDownload':
       return 'Click to download {file_type}';
     case 'media':

tests/localization/locales.ts

@@ -559,7 +559,7 @@ export const simpleDictionary = {
     args: undefined,
   },
   blockBlockedDescription: {
-    en: 'Unblock this contact to send a message.',
+    en: 'Unblock this contact to send a message',
     args: undefined,
   },
   blockBlockedNone: {