docs: update

Author: sylingd

docs/docs/en-US/guide/FAQ.md

@@ -18,9 +18,9 @@ So, since 4.0.0, Header Editor will reduce "header name" to lowercase. Except fo
 
 ## Response header modification not taking effect
 
-The modified response header will not be displayed in the developer tools. This result is inaccurate. Please refer to the actual result for accuracy.
+Developer tools (including Chrome and Firefox) do not display modified response headers. This result is inaccurate, so please refer to the actual results.
 
-For example, modify `content-type` to `text/plain` will make the webpage display as plain text. This indicates that the modification has been successful, but the developer tools still display `text/html`.
+For example, modifying `content-type` to `text/plain` can make a webpage display as plain text, indicating that the modification was successful. However, the developer tools still show `text/html`.
 
 ![2025-09-03_115619.png](https://img10.360buyimg.com/ddimg/jfs/t1/325127/5/15269/85767/68b7bc80F3d770c5e/45cdb64f42625693.jpg)
 

docs/docs/zh-CN/guide/FAQ.md

@@ -18,7 +18,7 @@ title: FAQ
 
 ## 响应头修改不生效
 
-开发者工具中不会显示修改后的响应头，此结果不准确，请以实际结果为准。
+开发者工具（包含 Chrome 和 Firefox）中不会显示修改后的响应头，此结果不准确，请以实际结果为准。
 
 例如将`content-type`修改为`text/plain`可以让网页显示为纯文本，可以看出实际已经修改成功，但开发者工具中仍然显示为`text/html`。
 

docs/docs/zh-TW/guide/FAQ.md

@@ -18,9 +18,9 @@ title: FAQ
 
 ## 修改回應頭不生效
 
-修改後的回應頭不會顯示在開發者工具中。此結果不準確，請以實際結果為準。
+開發者工具（包括 Chrome 和 Firefox）不會顯示修改後的回應頭。此結果不準確，請以實際結果為準。
 
-例如，將“content-type”變更為“text/plain”會導致網頁顯示為純文字。這表示修改成功，但開發者工具仍然顯示“text/html”。
+例如，將`content-type`修改為`text/plain`可以使網頁顯示為純文本，表示修改成功。然而，開發者工具仍然顯示`text/html`。
 
 ![2025-09-03_115619.png](https://img10.360buyimg.com/ddimg/jfs/t1/325127/5/15269/85767/68b7bc80F3d770c5e/45cdb64f42625693.jpg)