Fix Typo and removePrefix

Signed-off-by: Philipp <philipp+dev@xndr.de>

default.nix

@@ -75,7 +75,7 @@ let
         mkdir -p "$launcherCachePers" "$WINEPREFIX/drive_c/users/$USER/AppData/Roaming/"
         ln -s "$launcherCachePers" "$WINEPREFIX/drive_c/users/$USER/AppData/Roaming/"
 
-        ${lib.optionalString captureMouse ("${regEdit} ${captureMouseReg.text}")}
+        ${lib.optionalString captureMouse "${regEdit} ${captureMouseReg.text}"}
 
         #apply custom user registry files
         ${lib.concatMapStrings (x: "${regEdit} " + x + "\n") registryFiles}
@@ -157,8 +157,8 @@ let
       --clean)
         clean
         ;;
-      --removePrefix)
-        cleanPrefix
+      --remove-prefix)
+        removePrefix
         ;;
       --run-game|"")
         runGame