sync-diff-inspector: Fix double quoting

[dveeden]

What problem does this PR solve?

Issue Number: close #795

What is changed and how it works?

Check List

Tests

• Manual test (add detailed scripts or steps below)

With this PR:

$ ./bin/sync_diff_inspector --config ./sync-diff.conf 
A total of 1 tables need to be compared

Comparing the table structure of `test`.`t1` ... equivalent
Comparing the table data of `test`.`t1` ... failure
_____________________________________________________________________________
Progress [============================================================>] 100% 0/0
The data of `test`.`t1` is not equal

The rest of tables are all equal.

A total of 1 tables have been compared, 0 tables finished, 1 tables failed, 0 tables skipped.
The patch file has been generated in 
    'output/fix-on-tidb0/'
You can view the comparision details through './output/sync_diff.log'

[CLAassistant]

All committers have signed the CLA.

[ti-chi-bot[bot]]

@dveeden: Your PR was out of date, I have automatically updated it for you.

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[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Leavrth

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[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2024-05-28 09:17:42.281003047 +0000 UTC m=+2768016.038138621: :ballot_box_with_check: agreed by Leavrth.
• 2024-05-28 09:20:31.815267134 +0000 UTC m=+2768185.572402704: :heavy_multiplication_x::repeat: reset by ti-chi-bot[bot].
• 2024-05-28 10:00:06.947048073 +0000 UTC m=+2770560.704183646: :ballot_box_with_check: agreed by Leavrth.

[ti-chi-bot]

/close /open

[ti-chi-bot[bot]]

@ti-chi-bot: Closed this PR.

In response to [this](https://github.com/pingcap/tidb-tools/pull/796#issuecomment-2134919992): >/close >/open Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[ti-chi-bot]

/open