tools: fix typo in tools/update-authors.mjs

The filename ends with an s.

Signed-off-by: Darshan Sen <raisinten@gmail.com>
PR-URL: #44780
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Akhil Marsonya <akhil.marsonya27@gmail.com>

Author: RaisinTen

tools/update-authors.mjs

@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-// Usage: tools/update-author.mjs [--dry]
+// Usage: tools/update-authors.mjs [--dry]
 // Passing --dry will redirect output to stdout rather than write to 'AUTHORS'.
 import { spawn } from 'node:child_process';
 import fs from 'node:fs';