doc: update default branch name in test/**

Refs: https://github.com/nodejs/node/issues/33864

PR-URL: https://github.com/nodejs/node/pull/43445
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

test/doctool/test-doctool-versions.mjs

@@ -62,8 +62,8 @@ for (const version of versions) {
 // Check that the minimum number of versions were returned.
 // Later versions are allowed, but not checked for here (they were checked
 // above).
-// Also check for the previous semver major -- From master this will be the
-// most recent major release.
+// Also check for the previous semver major -- From the main branch this will be
+// the most recent major release.
 const thisMajor = Number.parseInt(process.versions.node.split('.')[0]);
 const prevMajorString = `${thisMajor - 1}.x`;
 if (!expected.includes(prevMajorString)) {

test/fixtures/package-main-enoent/test.js

@@ -3,6 +3,6 @@
 // The path in "main" in "package.json" does not exist here, but it does in
 // the copy in node_modules. This is being tested because bluebird tests depend
 // on this behavior and it was accidentally broken by a seemingly unrelated
-// commit on master.
+// commit on the main branch.
 
 require('package-main-enoent');

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

@@ -103,7 +103,7 @@ async function doReadAndCancel() {
 
   // Validate file size is within range for reading
   {
-    // Variable taken from https://github.com/nodejs/node/blob/master/lib/internal/fs/promises.js#L5
+    // Variable taken from https://github.com/nodejs/node/blob/1377163f3351/lib/internal/fs/promises.js#L5
     const kIoMaxLength = 2 ** 31 - 1;
 
     const newFile = path.resolve(tmpDir, 'dogs-running3.txt');

test/wpt/README.md

@@ -167,4 +167,4 @@ In that case it needs to be marked with `skip` instead of `fail`.
 
 [Web Platform Tests]: https://github.com/web-platform-tests/wpt
 [`test/fixtures/wpt/README.md`]: ../fixtures/wpt/README.md
-[git node wpt]: https://github.com/nodejs/node-core-utils/blob/master/docs/git-node.md#git-node-wpt
+[git node wpt]: https://github.com/nodejs/node-core-utils/blob/HEAD/docs/git-node.md#git-node-wpt