chore: fix typo in issue template (#27435)

I happened to find this one 😄 

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Author: tmokmss

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -95,7 +95,7 @@ body:
       label: Language
       multiple: true
       options:
-        - Typescript
+        - TypeScript
         - Python
         - .NET
         - Java