fix a link in release-8.5.5.md (#22422)#22424

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ti-chi-bot[bot] merged 1 commit intopingcap:release-8.5from

ti-chi-bot:cherry-pick-22422-to-release-8.5

Feb 9, 2026

Commits on Feb 9, 2026

Update release-8.5.5.md

qiancai
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