docs: add notation in pull-request template (#832)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.github/workflows/add-word.yaml

@@ -44,7 +44,12 @@ jobs:
           commit-message: "feat(words): add ${{ inputs.word }}"
           body: |
             TODO: Update this comment and add some reference links.
-            Please check [CONTRIBUTING.md](https://github.com/tier4/autoware-spell-check-dict/blob/main/CONTRIBUTING.md) before sending PR.
+            your usage of the word: [link of github or something]()
+            The documentation for the word: [link for word documentation]()
+
+            > [!NOTE]
+            > To get approval, you need to show external documentation proving that the word is not your own creation, but is common in the public and industry.
+            > Please check [CONTRIBUTING.md](https://github.com/tier4/autoware-spell-check-dict/blob/main/CONTRIBUTING.md) for detail.
           labels: |
             bot
             words