[chore] Update docs - node.js versions (#4414)

Author: webfiltered

README.md

@@ -529,7 +529,7 @@ Have another idea? Drop into Discord or open an issue, and let's chat!
 ### Prerequisites & Technology Stack
 
 - **Required Software**:
-  - Node.js (v16 or later) and npm
+  - Node.js (v16 or later; v20/v22 strongly recommended) and npm
   - Git for version control
   - A running ComfyUI backend instance
 

browser_tests/README.md

@@ -14,7 +14,7 @@ Clone <https://github.com/Comfy-Org/ComfyUI_devtools> to your `custom_nodes` dir
 _ComfyUI_devtools adds additional API endpoints and nodes to ComfyUI for browser testing._
 
 ### Node.js & Playwright Prerequisites
-Ensure you have Node.js v20 or later installed. Then, set up the Chromium test driver:
+Ensure you have Node.js v20 or v22 installed. Then, set up the Chromium test driver:
 ```bash
 npx playwright install chromium --with-deps
 ```