diff --git a/docs/api/puppeteer.page.evaluateonnewdocument.md b/docs/api/puppeteer.page.evaluateonnewdocument.md
index 2a3c53bfcc274..66f94b2dd4d66 100644
--- a/docs/api/puppeteer.page.evaluateonnewdocument.md
+++ b/docs/api/puppeteer.page.evaluateonnewdocument.md
@@ -43,13 +43,13 @@ An example of overriding the navigator.languages property before the page loads:
 
 // overwrite the `languages` property to use a custom getter
 Object.defineProperty(navigator, 'languages', {
-get: function () {
-return ['en-US', 'en', 'bn'];
-},
+  get: function () {
+    return ['en-US', 'en', 'bn'];
+  },
 });
 
 // In your puppeteer script, assuming the preload.js file is
-in same folder of our script
+// in same folder of our script.
 const preloadFile = fs.readFileSync('./preload.js', 'utf8');
 await page.evaluateOnNewDocument(preloadFile);
 ```
diff --git a/src/common/Page.ts b/src/common/Page.ts
index e97517d3544ac..0f078cc40abab 100644
--- a/src/common/Page.ts
+++ b/src/common/Page.ts
@@ -2784,13 +2784,13 @@ export class Page extends EventEmitter {
    *
    * // overwrite the `languages` property to use a custom getter
    * Object.defineProperty(navigator, 'languages', {
-   * get: function () {
-   * return ['en-US', 'en', 'bn'];
-   * },
+   *   get: function () {
+   *     return ['en-US', 'en', 'bn'];
+   *   },
    * });
    *
    * // In your puppeteer script, assuming the preload.js file is
-   * in same folder of our script
+   * // in same folder of our script.
    * const preloadFile = fs.readFileSync('./preload.js', 'utf8');
    * await page.evaluateOnNewDocument(preloadFile);
    * ```