fix: anchor regexp (#23577)

[wuzekang]

🤔 This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix fragment id regular expression
🇨🇳 Chinese	修复 fragment id 正则表达式

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

[ant-design-bot]

[afc163]

最好能补上用例。

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[codecov]

Codecov Report

Merging #23595 into master will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master   #23595      +/-   ##
==========================================
+ Coverage   98.49%   98.50%   +0.01%     
==========================================
  Files         363      363              
  Lines        7239     7239              
  Branches     1952     1952              
==========================================
+ Hits         7130     7131       +1     
+ Misses        109      108       -1     

Impacted Files	Coverage Δ
components/anchor/Anchor.tsx	94.61% <100.00%> (ø)
components/_util/openAnimation.tsx	96.42% <0.00%> (+3.57%)	⬆️

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