Fix "Related rules" link in ca1836.md. (#30237)

The bottom 2 links were mistakenly pointing to the same page.

Author: GitHubPang

docs/fundamentals/code-analysis/quality-rules/ca1836.md

@@ -93,7 +93,7 @@ For more information, see [How to suppress code analysis warnings](../suppress-w
 
 - [CA1827: Do not use Count/LongCount when Any can be used](ca1827.md)
 - [CA1828: Do not use CountAsync/LongCountAsync when AnyAsync can be used](ca1828.md)
-- [CA1829: Do not use CountAsync/LongCountAsync when AnyAsync can be used](ca1828.md)
+- [CA1829: Use Length/Count property instead of Enumerable.Count method](ca1829.md)
 
 ## See also