Update TagBot.yml

Author: JeffreySarnoff

.github/workflows/TagBot.yml

@@ -1,11 +1,12 @@
 name: TagBot
 on:
-  issue_comment:
+  issue_comment:  # THIS BIT IS NEW
     types:
       - created
   workflow_dispatch:
 jobs:
   TagBot:
+    # THIS 'if' LINE IS NEW
     if: github.event_name == 'workflow_dispatch' || github.actor == 'JuliaTagBot'
     # NOTHING BELOW HAS CHANGED
     runs-on: ubuntu-latest