Fix link in babel docs (v8)

[albertyw]

Proposed changes

This fixes a broken link in the documentation for babel. You can't have preformatted/code text
(``) within a link ([]()). The link also switched the bracket/parenthesis symbols.

This is a duplicate of #12549 but for v8 instead of main.

Types of changes

• Polish (an improvement for an existing feature)
• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update (improvements to the project's docs)
• Specification changes (updates to WebDriver command specifications)
• Internal updates (everything related to internal scripts, governance documentation and CI files)

Checklist

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation (if appropriate)
• I have added proper type definitions for new commands (if appropriate)

Backport Request

• This change is solely for v9 and doesn't need to be back-ported
• Front-ported PR at Fix link formatting in babel docs #12549

Further comments

Reviewers: @webdriverio/project-committers

[christian-bromann]

Nice catch 👌