Fixed the presentation link on a post

Author: ProgrammerAL

src/ProgrammerAl.Site.Content/Posts/20240921-Presentation-AtlDevConf2024/post.md

@@ -7,7 +7,7 @@ Tags:
 - .NET
 
 Slides:
-- https://raw.githubusercontent.com/ProgrammerAL/Presentations-2024/main/atlanta-developers-conference-2024/presentation.md
+- https://raw.githubusercontent.com/ProgrammerAL/Presentations-2024/main/atlanta-developers-conference-2024/presentation.html
 
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