Merge pull request #18263 from mntj/fix_typo_in_comment

Fix comment typo in debugger.rb [ci skip]

activesupport/lib/active_support/core_ext/kernel/debugger.rb

 module Kernel
   unless respond_to?(:debugger)
-    # Starts a debugging session if the +debugger+ gem has been loaded (call rails server --debugger to do load it).
+    # Starts a debugging session if the +debugger+ gem has been loaded (call rails server --debugger to load it).
     def debugger
       message = "\n***** Debugger requested, but was not available (ensure the debugger gem is listed in Gemfile/installed as gem): Start server with --debugger to enable *****\n"
       defined?(Rails) ? Rails.logger.info(message) : $stderr.puts(message)