desktop: fix local dev port

desktop/README.md

@@ -7,7 +7,7 @@ The Ollama desktop experience
 In the background run the `ollama.py` [development](../docs/development.md) server:
 
 ```
-python ../ollama.py serve --port 5001
+python ../ollama.py serve --port 7734
 ```
 
 Then run the desktop app: