[docs] fix tool name formatting (for supply) to be lowercase to pass fastlane docs unit tests

[rogerluan]

Checklist

• I've run bundle exec rspec from the root directory to see all new and existing tests pass
• I've followed the fastlane code style and run bundle exec rubocop -a to ensure the code style is valid
• I see several green ci/circleci builds in the "All checks have passed" section of my PR (connect CircleCI to GitHub if not)
• I've updated the documentation if necessary.

Motivation and Context

Resolves this issue:

Link: https://app.circleci.com/pipelines/github/fastlane/docs/739/workflows/6d6bc075-ecec-4248-9764-d481f19a56a5/jobs/3261

Description

The validation comes from here:

fastlane/fastlane/Fastfile

Lines 585 to 607 in 600555c

	desc "Ensure the correct formatting for the fastlane tools"
	private_lane :ensure_tool_name_formatting do
	UI.message("🕗 Verifying tool name formatting...")
	require 'fastlane/tools'
	errors = []
	Dir.chdir("..") do
	Dir["**/*.md"].each do |path|
	content = File.read(path)
	Fastlane::TOOLS.each do |tool|
	errors << "Use _#{tool}_ instead of `#{tool}` to mention a tool in the docs in '#{path}'" if content.include?("`#{tool}`")
	errors << "Use _#{tool}_ instead of `_#{tool}_` to mention a tool in the docs in '#{path}'" if content.include?("`_#{tool}_`")
	errors << "Use [_#{tool}_] instead of [#{tool}] to mention a tool in the docs in '#{path}'" if content.include?("[#{tool}]")
	errors << "Use <em>#{tool}<em> instead of <code>#{tool}</code> to mention a tool in the docs in '#{path}'" if content.include?("<code>#{tool}</code>")
	if content.include?("_#{tool.to_s.capitalize}_") || content.include?("`#{tool.to_s.capitalize}`")
	errors << "fastlane tools have to be formatted in lower case: #{tool} in '#{path}'"
	end
	end
	end
	end
	errors.each { |a| UI.error(a) }
	UI.user_error!("Invalid formatting of one of the fastlane tools") unless errors.empty?
	UI.success("✅ fastlane tools formatting is correct")
	end

Testing Steps

N/A

[AliSoftware]

And here I was wondering the other day why the docs on the web didn't list my new action 😅
Thanks for the fix!