fix docs

files/fastdu

@@ -5,7 +5,7 @@ function helpexit() {
     echo "Returns only the size as number"
     echo "  -h       Human readable units"
     echo "  -s       Summary mode, otherwise each argument folder calculated separate"
-    echo "  -c       Count files instead of summarizing sizes"
+    echo "  -c       Count files in addition of summarizing sizes"
     echo "  -a       Display animation while counting"
     echo "  -f #     Format filesize to human readable. Command exits without scanning."
     echo "  --help   This help"