doc: fix broken link in perf_hooks.md

PR-URL: nodejs#35113
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

doc/api/perf_hooks.md

@@ -758,7 +758,7 @@ require('some-module');
 
 [`'exit'`]: process.html#process_event_exit
 [`process.hrtime()`]: process.html#process_process_hrtime_time
-[`child_process.spawnSync()`]: #child_process_child_process_spawnsync_command_args_options
+[`child_process.spawnSync()`]: child_process.html#child_process_child_process_spawnsync_command_args_options
 [`timeOrigin`]: https://w3c.github.io/hr-time/#dom-performance-timeorigin
 [`window.performance`]: https://developer.mozilla.org/en-US/docs/Web/API/Window/performance
 [Async Hooks]: async_hooks.html