Invalid link in Docs

[YueMiyuki]

Describe the bug Invalid link in https://docs.dropzone.dev/getting-started/setup/server-side-implementation

To Reproduce Steps to reproduce the behavior:

1. Go to 'https://docs.dropzone.dev/getting-started/setup/server-side-implementation'
2. Click on 'NodeJS with express'
3. See error

Expected behavior I sure hope there is a valid example for nodejs

[enyo]

https://duckduckgo.com/?q=node.js+express+file+upload

Any of these results will do. I'll update the docs about it soon.