Update uvicorn app path in main.py files

Changed the uvicorn.run app path from the full module path to 'main:app' in both pizzaz_server_python and solar-system_server_python main.py files for consistency and improved portability.

Author: SmartManoj

pizzaz_server_python/main.py

@@ -324,4 +324,4 @@ async def _call_tool_request(req: types.CallToolRequest) -> types.ServerResult:
 if __name__ == "__main__":
     import uvicorn
 
-    uvicorn.run("pizzaz_server_python.main:app", host="0.0.0.0", port=8000)
+    uvicorn.run("main:app", host="0.0.0.0", port=8000)

solar-system_server_python/main.py

@@ -310,4 +310,4 @@ async def _call_tool_request(req: types.CallToolRequest) -> types.ServerResult:
 if __name__ == "__main__":
     import uvicorn
 
-    uvicorn.run("solar-system_server_python.main:app", host="0.0.0.0", port=8000)
+    uvicorn.run("main:app", host="0.0.0.0", port=8000)