Fix typo (porty-add -> porty-app)

tburrows13 · web-flow · commit 12ff9195c1cb · 2020-06-19T15:23:36.000+01:00
diff --git a/Notes/09_Packages/01_Packages.md b/Notes/09_Packages/01_Packages.md
@@ -243,7 +243,7 @@ package. One level up.
 
 ```python
 #!/usr/bin/env python3
-# porty-add/script.py
+# porty-app/script.py
 import sys
 import porty
 
