doc: add missing link references

PR-URL: nodejs#18222
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

Author: vsemozhetbyt

doc/api/assert.md

@@ -863,6 +863,7 @@ Due to the confusing notation, it is recommended not to use a string as the
 second argument. This might lead to difficult-to-spot errors.
 
 [`Error.captureStackTrace`]: errors.html#errors_error_capturestacktrace_targetobject_constructoropt
+[`Error`]: errors.html#errors_class_error
 [`Map`]: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Map
 [`Object.is()`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
 [`RegExp`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

doc/api/errors.md

@@ -1661,6 +1661,7 @@ Creation of a [`zlib`][] object failed due to incorrect configuration.
 [`hash.digest()`]: crypto.html#crypto_hash_digest_encoding
 [`hash.update()`]: crypto.html#crypto_hash_update_data_inputencoding
 [`readable._read()`]: stream.html#stream_readable_read_size_1
+[`server.close()`]: net.html#net_server_close_callback
 [`sign.sign()`]: crypto.html#crypto_sign_sign_privatekey_outputformat
 [`stream.pipe()`]: stream.html#stream_readable_pipe_destination_options
 [`stream.push()`]: stream.html#stream_readable_push_chunk_encoding