Update gemspec.

Author: wenbinf

podcast_api.gemspec

@@ -11,19 +11,19 @@ Gem::Specification.new do |s|
   s.summary = "Ruby bindings for the Listen Notes Podcast API"
   s.description = "Listen Notes is the best podcast search engine and api.  " \
                   "This is the official Ruby Gem for the Listen Notes Podcast API. " \
-                  "See https://www.listennotes.com/api/ for details."
+                  "See https://www.PodcastAPI.com/ for details."
   s.author = "Listen Notes, Inc."
   s.email = "[email protected]"
-  s.homepage = "https://www.listennotes.com/api/"
+  s.homepage = "https://www.PodcastAPI.com/"
   s.license = "MIT"
   s.add_runtime_dependency "httparty"
   s.metadata = {
     "bug_tracker_uri" => "https://github.com/ListenNotes/podcast-api-ruby/issues",
     "changelog_uri" =>
       "https://github.com/ListenNotes/podcast-api-ruby/releases",
-    "documentation_uri" => "https://www.listennotes.com/api/docs/",
+    "documentation_uri" => "https://www.listennotes.com/podcast-api/docs/",
     "github_repo" => "https://github.com/ListenNotes/podcast-api-ruby",
-    "homepage_uri" => "https://www.listennotes.com/api/",
+    "homepage_uri" => "https://www.PodcastAPI.com/",
     "source_code_uri" => "https://github.com/ListenNotes/podcast-api-ruby",
   }