build: fix typo in Makefile

PR-URL: nodejs#36176
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Rich Trott <[email protected]>

Author: RaisinTen

Diff for: Makefile

@@ -1346,7 +1346,7 @@ lint-py:
 	PYTHONPATH=tools/pip $(PYTHON) -m flake8 --count --show-source --statistics .
 else
 lint-py:
-	$(warning Python linting with flake8 is not avalible)
+	$(warning Python linting with flake8 is not available)
 	$(warning Run 'make lint-py-build')
 endif