Add resource for node.js (#6731)

Update `child_process` module entry with insight about security implications of using this in Node.js apps

src/data/roadmaps/nodejs/content/child-process@lzPrWD3pxQmpbqgYPL-zW.md

@@ -10,3 +10,4 @@ The three main methods inside this module are :
 Visit the following resources to learn more:
 
 - [@official@Child Process Docs](https://nodejs.org/api/child_process.html#child-process)
+- [@article@Securing Node.js Against Command Injection](https://www.nodejs-security.com/blog/securing-your-nodejs-apps-by-analyzing-real-world-command-injection-examples)