meta: standardize regex

PR-URL: nodejs#52693
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>

.github/label-pr-config.yml

@@ -86,7 +86,7 @@ subSystemLabels:
   # Oddities first
   /^lib\/(?:punycode|\w+\/freelist|sys\.js)/: ''
   /^lib\/constants\.js$/: lib / src
-  /^lib\/internal/debugger$/: debugger
+  /^lib\/internal\/debugger$/: debugger
   /^lib\/internal\/linkedlist\.js$/: timers
   /^lib\/internal\/bootstrap/: lib / src
   /^lib\/internal\/v8_prof_/: tools