Update DOSEMU installation instructions in README for better clarity

readme.md

@@ -70,9 +70,15 @@ The project is organized into modular assembly files:
 ### Option 2: Using DOSEMU (Linux)
 
 1. **Install DOSEMU**:
-   ```bash
-   sudo apt-get install dosemu
-   ```
+    ```bash
+        sudo add-apt-repository ppa:dosemu2/ppa
+        sudo apt update
+        sudo apt install dosemu2
+    ```
+    # For older versions, you might need:
+    ```bash
+        sudo apt-get install dosemu
+    ```
 
 2. **Setup and compile** as described above