Replace SVG logo with PNG

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -18,7 +18,7 @@ size_categories:
 ---
 # Flash Coding
 
-![logitly.ai](logo.svg)
+![logitly.ai](logo.png)
 
 > [!CAUTION]
 > Uploading these datasets to proprietary AI (e.g., asking a question that includes them) can get your account suspended: the AI vendor can misclassify the chain of thought in these records as reverse engineering or duplicating model outputs.