[git] fixed alias

git/git.zsh

@@ -11,7 +11,7 @@ alias gss='git stash save'
 alias gsp='git stash pop'
 alias gmv='git mv'
 alias grm='git rm'
-alias grn='git_rename'
+alias grn='git-rename'
 alias glog="git log --graph --pretty=format:'%Cred%h%Creset %an: %s - %Creset %C(yellow)%d%Creset %Cgreen(%cr)%Creset' --abbrev-commit --date=relative"
 
 alias sub-pull='git submodule foreach git pull origin master'