Fixed some links in a post

Author: ProgrammerAL

src/ProgrammerAl.Site.Content/Posts/20260223_ConFoo2026/post.md

@@ -9,7 +9,7 @@ Presentations:
 - Id: 1
   SlidesRootUrl: https://github.com/ProgrammerAL/Presentations-2026/tree/main/confoo-2026/csharp-pit-of-success
 - Id: 2
-  SlidesRootUrl: https://raw.githubusercontent.com/ProgrammerAL/Presentations-2025/main/boston-code-camp-38/csharp-pit-of-success
+  SlidesRootUrl: https://github.com/ProgrammerAL/Presentations-2026/tree/main/confoo-2026/coding-csharp-with-csharp
 
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