Merge pull request #6 from karboggy/fix/forking-submodule

Update 2. forking.md (missing rm)

Author: kercre123

documents/6. Make Your Own CFW/2. forking.md

@@ -28,10 +28,10 @@ git push
 cd ~
 git clone https://github.com/diode123/diode-os-victor --recursive
 cd wire-os-victor
-git rm -f EXTERNALS
+git rm -f EXTERNALS .git/modules/EXTERNALS
 rm -rf EXTERNALS
 git commit -m "remove externals"
 git submodule add https://github.com/diode123/diode-os-externals EXTERNALS
 git commit -m "update externals"
 git push
-```
+```