doc: improve util.promisify() content in readline.md

Author: Trott

doc/api/readline.md

@@ -355,8 +355,8 @@ signal.addEventListener('abort', () => {
 setTimeout(() => ac.abort(), 10000);
 ```
 
-If this method is invoked as it's util.promisify()ed version, it returns a
-Promise that fulfills with the answer. If the question is canceled using
+Use `util.promisify()` to create a version that returns a
+promise that fulfills with the answer. If the question is canceled using
 an `AbortController` it will reject with an `AbortError`.
 
 ```js
@@ -899,8 +899,8 @@ signal.addEventListener('abort', () => {
 setTimeout(() => ac.abort(), 10000);
 ```
 
-If this method is invoked as it's util.promisify()ed version, it returns a
-Promise that fulfills with the answer. If the question is canceled using
+Use `util.promisify()` to create a version that returns a
+promise that fulfills with the answer. If the question is canceled using
 an `AbortController` it will reject with an `AbortError`.
 
 ```js
@@ -1445,4 +1445,5 @@ const { createInterface } = require('readline');
 [`process.stdin`]: process.md#processstdin
 [`process.stdout`]: process.md#processstdout
 [`rl.close()`]: #rlclose
+[`util.promisify()`]: util.md#utilpromisifyoriginal
 [reading files]: #example-read-file-stream-line-by-line