Fix typo in CONTRIBUTING.md (python#11474)

noob8boi · tushar-deepsource · commit 8c3854c55da9 · 2022-01-20T16:42:49.000+05:30
Fixes python#11473
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -27,7 +27,7 @@ cd mypy
 
 # Create then activate a virtual environment
 python3 -m venv venv
-source venv/bin/actiate
+source venv/bin/activate
 
 # Install the test requirements and the project
 python3 -m pip install -r test-requirements.txt
