Update comments for RuboCop pattern

ale_linters/ruby/rubocop.vim

@@ -4,7 +4,7 @@
 function! ale_linters#ruby#rubocop#Handle(buffer, lines) abort
     " Matches patterns line the following:
     "
-    " <path>/_:47:14: 83:29: C: Prefer single-quoted strings when you don't
+    " <path>:83:29: C: Prefer single-quoted strings when you don't
     " need string interpolation or special symbols.
     let l:pattern = '\v:(\d+):(\d+): (.): (.+)'
     let l:output = []