Update gemspec metadata to include documentation and bug tracker URIs

Author: ydah

redhound.gemspec

@@ -14,9 +14,11 @@ Gem::Specification.new do |spec|
   spec.license = "MIT"
   spec.required_ruby_version = ">= 3.0"
 
-  spec.metadata["homepage_uri"] = spec.homepage
-  spec.metadata["source_code_uri"] = spec.homepage
-  spec.metadata["changelog_uri"] = "#{spec.homepage}/blob/main/CHANGELOG.md"
+  spec.metadata["homepage_uri"]      = spec.homepage
+  spec.metadata["source_code_uri"]   = spec.homepage
+  spec.metadata["documentation_uri"] = spec.homepage
+  spec.metadata["changelog_uri"]     = "#{spec.homepage}/releases"
+  spec.metadata["bug_tracker_uri"]   = "#{spec.homepage}/issues"
 
   gemspec = File.basename(__FILE__)
   spec.files = IO.popen(%w[git ls-files -z], chdir: __dir__, err: IO::NULL) do |ls|