utils: tweak formatting.

Library/Homebrew/utils.rb

@@ -498,7 +498,10 @@ module Kernel
   end
 
   def command_help_lines(path)
-    path.read.lines.grep(/^#:/).map { |line| line.slice(2..-1) }
+    path.read
+        .lines
+        .grep(/^#:/)
+        .map { |line| line.slice(2..-1) }
   end
 
   def redact_secrets(input, secrets)