doc: fix typo on esm loaders example

Fixes a small typo on the Transpiler loader example.

PR-URL: #47015
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Deokjin Kim <deokjin81.kim@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>

doc/api/esm.md

@@ -1129,7 +1129,7 @@ export async function load(url, context, nextLoad) {
     // file, search up the file system for the nearest parent package.json file
     // and read its "type" field.
     const format = await getPackageType(url);
-    // When a hook returns a format of 'commonjs', `source` is be ignored.
+    // When a hook returns a format of 'commonjs', `source` is ignored.
     // To handle CommonJS files, a handler needs to be registered with
     // `require.extensions` in order to process the files with the CommonJS
     // loader. Avoiding the need for a separate CommonJS handler is a future