clean up duff entries

networking/pip.md

@@ -13,3 +13,9 @@ Upgrade all packages
 
 > pip freeze --local | grep -v '^\-e' | cut -d = -f 1  | xargs -n1 pip install -U
 
+# Troubleshooting
+
+You may need a python3 package.
+In this case, try:
+
+> pip3 install [ package ]