scripts: update fzfcd to fish

.config/scripts/util/cdfzf

@@ -1,8 +1,8 @@
-#!/bin/bash
+#!/bin/fish
-selection=$(fzf)
+set selection (fzf)
 
-selection=$(echo $selection | sed 's,/[^/]*$,,')
+set selection (echo $selection | sed 's,/[^/]*$,,')
 
-if [ ! $selection = "\S" ]; then
+if [ ! $selection = "\S" ]
 	cd $selection
-fi
+end