Please, review DevStudio content at https://developers.redhat.com/products/devstudio/overview/ (incl. sub-pages) and list found problems. Check especially for:

• broken, out-of-date links
• incorrect product names
• incorrect product components, features
• invalid installation, usage instructions

Take into consideration that stuff from https://issues.jboss.org/browse/RHDEVDOCS-677 may not yet have been fixed.