zsh: add todo cd to todo()

.zshrc

@@ -172,10 +172,10 @@
    # a symlink called 'todo' that points to your todo list in your home directory
    #
    todo() {
-      ( # subshell to protect against directory changes
       todo_dir="$(dirname "$(realpath ~/todo)")"
       todo_file="$(realpath ~/todo)"
       if [ -z "$@" ];then
+         ( # subshell to protect against directory changes
          cd "$todo_dir"
 
          # pull the latest commits
@@ -190,10 +190,15 @@
             git commit "$todo_file" -m 'todo' &&
                git push
          fi
+         )
+
+      elif [ "$@" = "cd" ]; then
+         cd "$todo_dir"
+
       else
          git -C "$todo_dir" $@
+
       fi
-      )
    }
 
    # Simple extraction script. Taken from manjaro's .bashrc