remove sectio on forking from intro to github page

Author: DininduSenanayake

docs/5.from_git_to_github.md

@@ -295,37 +295,6 @@ flowchart LR
 
 ---
 
-## 8. Forking — External Contributions
-
-A postdoc from another university wants to adapt `CellClusterFlow` for their spatial transcriptomics data. They can't push directly (no write access), so they **fork** the repository.
-
-### Forking workflow:
-
-1. **Fork**: Click "Fork" on GitHub → creates copy under their account
-2. **Clone their fork**:
-````bash
-   git clone https://github.com/PostdocZ/CellClusterFlow.git
-````
-3. **Make changes** on a new branch
-4. **Push to their fork**
-5. **Open a Pull Request** from their fork back to Dr. X's original repo
-````mermaid
-flowchart TB
-  ORIG[DrX/CellClusterFlow<br/>Original repo] 
-  FORK[PostdocZ/CellClusterFlow<br/>Forked repo]
-  
-  ORIG -->|Fork| FORK
-  FORK -->|Make changes| FORK
-  FORK -->|Pull Request| ORIG
-  
-  style ORIG fill:#e6ffe6,stroke:#333
-  style FORK fill:#e6f7ff,stroke:#333
-````
-
-This is how **open-source** contributions work — anyone can suggest improvements without needing direct access!
-
----
-
 ## 10. README and Documentation
 
 A good `README.md` is like a well-written Methods section — it should help others reproduce your work.