Fix model tree by commenting out base_model

Commented out the base_model key in README.md to prevent
recursive self-reference, which caused the "Unable to build model tree" error
in the Hugging Face UI. No model weights or other files were changed.

README.md

@@ -11,7 +11,7 @@ tags:
 - reinforcement-learning
 - mcpo
 pipeline_tag: text-generation
-base_model: Maincode/Maincoder-1B
+# base_model: Maincode/Maincoder-1B
 ---
 <img src="https://huggingface.co/datasets/Maincode/assets/resolve/e51154e034201be1a5dad0e9c8de31d8b9f17643/maincoder_logo.png" alt="" width="1250">