Fix mkdir command in mkcd in linux zsh config

zsh-linux/.config/zsh-linux/zshrc

@@ -1,7 +1,7 @@
 # Linux-specific zsh configuration
 # Make a directory, then change into it
 mkcd() {
-    [[ ! -d "${1}" ]] && gmkdir --parents -- "${1}"
+    [[ ! -d "${1}" ]] && mkdir --parents -- "${1}"
     cd "${1}" || exit
 }