doc: fix broken link to writableEnded in deprecations doc

PR-URL: #34984
Reviewed-By: Harshitha K P <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

Author: Trott

doc/api/deprecations.md

@@ -2860,7 +2860,7 @@ The [`crypto.Certificate()` constructor][] is deprecated. Use
 [`response.end()`]: http.html#http_response_end_data_encoding_callback
 [`response.finished`]: #http_response_finished
 [`response.writableFinished`]: #http_response_writablefinished
-[`response.writableEnded`]: #http_response_writableended
+[`response.writableEnded`]: http.html#http_response_writableended
 [`script.createCachedData()`]: vm.html#vm_script_createcacheddata
 [`setInterval()`]: timers.html#timers_setinterval_callback_delay_args
 [`setTimeout()`]: timers.html#timers_settimeout_callback_delay_args