fix typo

Author: Greg Bowler

phpstan-action.bash

@@ -19,7 +19,7 @@ if [ -n "$ACTION_PATH" ]
 then
 	IFS=" "
 	read -r -a splitIFS <<< "$ACTION_PATH"
-	for path in "${splitIFS[@]]}"
+	for path in "${splitIFS[@]}"
 	do
 		command_string+=("$path")
 	done