omniauth-tanita.gemspec in omniauth-tanita-0.2.0 vs omniauth-tanita.gemspec in omniauth-tanita-0.2.1

@@ -15,9 +15,10 @@
   spec.required_ruby_version = Gem::Requirement.new('>= 2.4.0')
 
   spec.metadata['homepage_uri'] = spec.homepage
   spec.metadata['source_code_uri'] = 'https://github.com/koshilife/omniauth-tanita'
   spec.metadata['changelog_uri'] = "#{spec.metadata['source_code_uri']}/blob/master/CHANGELOG.md"
+  spec.metadata['documentation_uri'] = 'https://www.rubydoc.info/gems/omniauth-tanita/'
 
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files = Dir.chdir(File.expand_path(__dir__)) do
     `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }