greptimedb/.github/pull_request_template.md

I hereby agree to the terms of the GreptimeDB CLA.

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What's changed and what's your intention?

!!! DO NOT LEAVE THIS BLOCK EMPTY !!!

Please explain IN DETAIL what the changes are in this PR and why they are needed:

• Summarize your change (mandatory)
• How does this PR work? Need a brief introduction for the changed logic (optional)
• Describe clearly one logical change and avoid lazy messages (optional)
• Describe any limitations of the current code (optional)

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.