[fish] Update pass copy to sure

fish/.config/fish/functions/passf.fish

@@ -1,3 +0,0 @@
-function passf
-	pass -c 15five/$argv
-end

fish/.config/fish/functions/passu.fish

@@ -0,0 +1,3 @@
+function passu
+	pass -c sure/$argv
+end