Add docs link to RubyGems metadata #2334

Job	Run time
lint	10s
Ruby 3.1 on ubuntu-latest with Gemfile	2m 29s
Ruby 3.2 on ubuntu-latest with Gemfile	2m 25s
Ruby 3.3 on ubuntu-latest with Gemfile	2m 31s
Ruby 3.1 on ubuntu-latest with gemfiles/Gemfile-rails-main	2m 30s
Ruby 3.2 on ubuntu-latest with gemfiles/Gemfile-rails-main	2m 30s
Ruby 3.3 on ubuntu-latest with gemfiles/Gemfile-rails-main	2m 16s
Ruby 3.1 on macos-latest with Gemfile	1m 49s
Ruby 3.2 on macos-latest with Gemfile	2m 13s
Ruby 3.3 on macos-latest with Gemfile	2m 12s
Ruby 3.1 on macos-latest with gemfiles/Gemfile-rails-main	3m 0s
Ruby 3.2 on macos-latest with gemfiles/Gemfile-rails-main	2m 32s
Ruby 3.3 on macos-latest with gemfiles/Gemfile-rails-main	3m 20s
Ruby 3.1 on windows-latest with Gemfile	9m 34s
Ruby 3.2 on windows-latest with Gemfile	9m 50s
Ruby 3.3 on windows-latest with Gemfile	7m 23s
Ruby 3.1 on windows-latest with gemfiles/Gemfile-rails-main	8m 47s
Ruby 3.2 on windows-latest with gemfiles/Gemfile-rails-main	9m 38s
Ruby 3.3 on windows-latest with gemfiles/Gemfile-rails-main	6m 50s
	1h 21m 59s

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