Add docs link to RubyGems metadata #2333

Job	Run time
lint	13s
Ruby 3.1 on ubuntu-latest with Gemfile	2m 31s
Ruby 3.2 on ubuntu-latest with Gemfile	2m 14s
Ruby 3.3 on ubuntu-latest with Gemfile	2m 23s
Ruby 3.1 on ubuntu-latest with gemfiles/Gemfile-rails-main	2m 53s
Ruby 3.2 on ubuntu-latest with gemfiles/Gemfile-rails-main	2m 27s
Ruby 3.3 on ubuntu-latest with gemfiles/Gemfile-rails-main	2m 35s
Ruby 3.1 on macos-latest with Gemfile	2m 57s
Ruby 3.2 on macos-latest with Gemfile	2m 26s
Ruby 3.3 on macos-latest with Gemfile	2m 24s
Ruby 3.1 on macos-latest with gemfiles/Gemfile-rails-main	2m 15s
Ruby 3.2 on macos-latest with gemfiles/Gemfile-rails-main	2m 34s
Ruby 3.3 on macos-latest with gemfiles/Gemfile-rails-main	3m 19s
Ruby 3.1 on windows-latest with Gemfile	8m 48s
Ruby 3.2 on windows-latest with Gemfile	8m 49s
Ruby 3.3 on windows-latest with Gemfile	7m 1s
Ruby 3.1 on windows-latest with gemfiles/Gemfile-rails-main	9m 11s
Ruby 3.2 on windows-latest with gemfiles/Gemfile-rails-main	10m 10s
Ruby 3.3 on windows-latest with gemfiles/Gemfile-rails-main	8m 13s
	1h 23m 23s

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