Update urls.

Author: wenbinf

src/PodcastAPI/Client.cs

@@ -261,7 +261,7 @@ private void ProcessStatus(int status)
                 case 401:
                     throw new AuthenticationException("Wrong api key or your account is suspended");
                 case 429:
-                    throw new RateLimitException("For FREE plan, exceeding the quota limit; or for all plans, sending too many requests too fast and exceeding the rate limit - https://www.listennotes.com/api/faq/#faq17");
+                    throw new RateLimitException("For FREE plan, exceeding the quota limit; or for all plans, sending too many requests too fast and exceeding the rate limit - https://www.listennotes.com/podcast-api/faq/#faq17");
                 case 404:
                     throw new NotFoundException("Endpoint not exist, or podcast / episode not exist.");
                 case 400:

src/PodcastAPI/PodcastAPI.csproj

@@ -10,7 +10,7 @@
     <PackageId>PodcastAPI</PackageId>
     <PackageTags>listennotes;podcast;api</PackageTags>
     <PackageIcon>icon.png</PackageIcon>
-    <PackageProjectUrl>https://www.listennotes.com/api/</PackageProjectUrl>    
+    <PackageProjectUrl>https://www.listennotes.com/podcast-api/</PackageProjectUrl>    
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <RepositoryUrl>https://github.com/ListenNotes/podcast-api-dotnet</RepositoryUrl> 
     <RepositoryType>git</RepositoryType>