test: fix long lines

This commit addresses several lines that are unnecessarily
longer than the 80 character limit. The only reason they pass
linting, I believe, is because they contain URLs.

PR-URL: #31014
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

test/parallel/test-promises-unhandled-proxy-rejections.js

@@ -15,7 +15,8 @@ const expectedPromiseWarning = ['Unhandled promise rejection. ' +
   'not handled with .catch(). To terminate the ' +
   'node process on unhandled promise rejection, ' +
   'use the CLI flag `--unhandled-rejections=strict` (see ' +
-  'https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)'];
+  'https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). ' +
+  '(rejection id: 1)'];
 
 function throwErr() {
   throw new Error('Error from proxy');

test/parallel/test-promises-unhandled-symbol-rejections.js

@@ -16,7 +16,8 @@ const expectedPromiseWarning = ['Unhandled promise rejection. ' +
   'not handled with .catch(). To terminate the ' +
   'node process on unhandled promise rejection, ' +
   'use the CLI flag `--unhandled-rejections=strict` (see ' +
-  'https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)'];
+  'https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). ' +
+  '(rejection id: 1)'];
 
 common.expectWarning({
   DeprecationWarning: expectedDeprecationWarning,