change path format for modmgr

rf2/setup_server.py

@@ -203,12 +203,9 @@ def install_workshop(server_path: str, workshop_files: list) -> bool:
 
     args = [
         mod_mgr_path,
-        "-c",
-        working_dir,
-        "-p",
-        packages_dir,
-        "-d",
-        install_dir
+        f"-c{working_dir}",
+        f"-p{packages_dir}",
+        f"-d{install_dir}"
     ]
 
     for file in workshop_files: