actions: Do not limit the length of single word in commit body

If the line comprises of only a single word,
it may be something like a URL (it's certainly very unlikely to be a
normal word if the default lengths are being used), so length
checks won't be applied to it.

Signed-off-by: Tim Zhang <tim@hyper.sh>

.github/workflows/commit-message-check.yaml

@@ -41,7 +41,7 @@ jobs:
       uses: tim-actions/commit-message-checker-with-regex@v0.3.1
       with:
         commits: ${{ steps.get-pr-commits.outputs.commits }}
-        pattern: '^.+(\n.{0,72})*$|^.+\n\s*[^a-zA-Z\s\n]'
+        pattern: '^.+(\n.{0,72})*$|^.+\n\s*[^a-zA-Z\s\n]|^.+\n\S+$'
         error: 'Body line too long (max 72)'
         post_error: ${{ env.error_msg }}