Fix safeSlugname regex /-([a-z])/g  => /-(a-zA-Z)/g

safeSlugname with regex `/-([a-z])/g` will pass error
    
example: give `angular-Uid` will cause error
   
So I change the regex to `/-([a-zA-Z])/g`, that's mean `angular-Uid` will pass success to `angularUid`