fix: fix lint

Author: y-hsgw

test/parallel/test-fs-promises-file-handle-append-file.js

@@ -58,5 +58,5 @@ async function doAppendAndCancel() {
 Promise.all([
   validateAppendBuffer(),
   validateAppendString(),
-  doAppendAndCancel()
+  doAppendAndCancel(),
 ]).then(common.mustCall());