test: fix comment typo

PR-URL: #38161
Backport-PR-URL: #38858
Refs: https://github.com/nodejs/node/discussions/36481
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Jan Krems <jan.krems@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

Author: Trott

test/inspector-cli/test-inspector-cli-address.js

@@ -16,7 +16,7 @@ function launchTarget(...args) {
   const childProc = spawn(process.execPath, args);
   return new Promise((resolve, reject) => {
     const onExit = () => {
-      reject(new Error('Child process exits unexpectly'));
+      reject(new Error('Child process exits unexpectedly'));
     };
     childProc.on('exit', onExit);
     childProc.stderr.setEncoding('utf8');