planner: fix typo in comment

[shawn0915]

What problem does this PR solve?

Issue Number: close None

Problem Summary:
planner: fix typo in comment

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.
  • Only fix typo in comment.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

Hi @shawn0915. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[tiprow]

Hi @shawn0915. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[shawn0915]

@zimulala PTAL

[hawkingrei]

/ok-to-test

[codecov]

Codecov Report

Merging #48300 (4b5615c) into master (4f00ece) will increase coverage by 1.3107%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #48300        +/-   ##
================================================
+ Coverage   71.4917%   72.8024%   +1.3107%     
================================================
  Files          1402       1425        +23     
  Lines        406373     412762      +6389     
================================================
+ Hits         290523     300501      +9978     
+ Misses        96016      93345      -2671     
+ Partials      19834      18916       -918     

Flag	Coverage Δ
integration	43.1737% <ø> (?)
unit	71.4779% <ø> (-0.0138%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	53.9874% <ø> (ø)
parser	∅ <ø> (∅)
br	48.6730% <ø> (-4.2626%)	⬇️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, ngaut

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Needs approval from an approver in each of these files:

• OWNERS [hawkingrei,ngaut]

Approvers can indicate their approval by writing /approve in a comment
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-05 06:57:41.228878191 +0000 UTC m=+3368258.815988340: ☑️ agreed by hawkingrei.
• 2023-11-06 01:38:35.46022438 +0000 UTC m=+3435513.047334525: ☑️ agreed by ngaut.