Fix confusing comment typo [ci skip] (#2761)

lib/puma/cli.rb

@@ -11,10 +11,10 @@ require 'puma/events'
 
 module Puma
   class << self
-    # The CLI exports its Puma::Configuration object here to allow
-    # apps to pick it up. An app needs to use it conditionally though
-    # since it is not set if the app is launched via another
-    # mechanism than the CLI class.
+    # The CLI exports a Puma::Configuration instance here to allow
+    # apps to pick it up. An app must load this object conditionally
+    # because it is not set if the app is launched via any mechanism
+    # other than the CLI class.
     attr_accessor :cli_config
   end