• instead of . in README (#43353)

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## Summary of the Pull Request

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## PR Checklist

- [ ] Closes: #xxx
- [ ] **Communication:** I've discussed this with core contributors
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- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
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README.md

@@ -10,11 +10,11 @@
 
 <h3 align="center">
   <a href="#-installation">Installation</a>
-  <span> . </span>
+  <span> · </span>
   <a href="https://aka.ms/powertoys-docs">Documentation</a>
-  <span> . </span>
+  <span> · </span>
   <a href="https://aka.ms/powertoys-releaseblog">Blog</a>
-  <span> . </span>
+  <span> · </span>
   <a href="#-whats-new">Release notes</a>
 </h3>
 <br/><br/>