chore: update issue template (langgenius#10693)

Author: crazywoola

.github/pull_request_template.md

@@ -3,7 +3,7 @@
 Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.
 
 > [!Tip]
-> Tips: Close issue syntax: `Fixes #<issue number>` or `Resolves #<issue number>`, see [documentation](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword) for more details.
+> Close issue syntax: `Fixes #<issue number>` or `Resolves #<issue number>`, see [documentation](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword) for more details.
 
 
 # Screenshots
@@ -19,7 +19,7 @@ Please include a summary of the change and which issue is fixed. Please also inc
   </tr>
 </table>
 
-# Checklist:
+# Checklist
 
 > [!IMPORTANT]  
 > Please review the checklist below before submitting your pull request.