ZSH: fixes issue for creaing directory with ~ in path

The alt-m key binding is used to create a directory for the current
"word". This change makes it work if it has something like ~ in the
name.

${~var} is used to turn on GLOB_SUBST. The string resulting from the
expansion will be interpreted as a pattern anywhere that is possible,
such as filenames expanding `~`

man zshexpn

shells/zsh/includes/keybindings.zsh

@@ -100,11 +100,11 @@ make_current_word_directory(){
 	else
 		folder="${folder//\\ / }"
 	fi
-	folder="${folder%/*}"
+	folder="${~folder%/*}"
-	if [ -e "$folder" ]; then
+	if [ -e "${~folder}" ]; then
 		zle -M "$folder already exists"
 	else
-		output="$(mkdir -p "$folder" 2>&1)"
+		output="$(mkdir -p "${~folder}" 2>&1)"
 		if [ $? -eq 0 ]; then
 			zle -M "$folder created"
 		else