Update README.md

Author: HeroicHitesh

python-for-beginners/15 - Packages/README.md

@@ -24,7 +24,7 @@ display('Not a warning')
 
 ## Virtual environments
 
-[Virtual environments](https://docs.python.org/3.7/library/exceptions.html) allow you to install packages into an isolated folder. This allows you to better manage versions.
+[Virtual environments](https://docs.python.org/3.7/tutorial/venv.html) allow you to install packages into an isolated folder. This allows you to better manage versions.
 
 ``` console