Change update/upgrade functions.

zsh/aliases.zsh

@@ -19,9 +19,10 @@ fi
 
 function ud() {
   wd dots && git pull
-  for i in $XDG_DATA_HOME/repos/zsh_modules/*; do cd $i && git pull; done; cd
+  for i in $XDG_DATA_HOME/repos/zsh_modules/*; do sh -c "cd $i && git pull"; done
   vim -c "PlugUpdate" -c "PlugClean" -c "q" -c "q"
   rm -rf ~/go
+  cd
 }
 function upgrade() {
   case $(lsb_release -i | awk '{print $3}') in