style: Modify some styles to improve the appearance of the version button

[Anyexyz]

What this PR does / why we need it?

Refs #7410

Summary of your change

Add line-height: 1 to .el-link__inner

Please indicate you've done the following:

• Made sure tests are passing and test coverage is added if needed.
• Made sure commit message follow the rule of Conventional Commits specification.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed.

[f2c-ci-robot]

Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[f2c-ci-robot]

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[wanghe-fit2cloud]

感谢支持。