Fix mismatched backtick in legacy_stdio_float_rounding.obj link texts

[Rageking8]

GitHub struggles to show the exact diff, but essentially, its just replacing the ' character with a correct backtick. Example of how the error is rendered:

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docs/c-runtime-library/reference/cprintf-s-cprintf-s-l-cwprintf-s-cwprintf-s-l.md	✅Succeeded
docs/c-runtime-library/reference/fprintf-fprintf-l-fwprintf-fwprintf-l.md	✅Succeeded
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docs/c-runtime-library/reference/vsnprintf-s-vsnprintf-s-vsnprintf-s-l-vsnwprintf-s-vsnwprintf-s-l.md	✅Succeeded
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PRMerger Results

Issue	Description
Changed Files	This PR contains more than 10 changed files.