fix make clean command (#16823)

Author: Borda

Makefile

@@ -26,7 +26,9 @@ clean:
 	rm -rf dist
 	rm -rf *.egg-info
 	rm -rf src/*.egg-info
-	rm -rf src/lightning/*/
+	rm -rf src/lightning_app/*/
+	rm -rf src/lightning_fabric/*/
+	rm -rf src/pytorch_lightning/*/
 
 test: clean
 	# Review the CONTRIBUTING documentation for other ways to test.