Proposed change

Updating zwave portion of the documentation with minor adjustments:

• Adding recommendation to disenroll a device before attempting to add to the network since this could save hours of annoyance.
• Minor updates the removing devices sections
• Minor update to the network key section
• Updates are in /_docs/z-wave/adding.markdown & /_docs/z-wave.markdown

Type of change

• [x ] Spelling, grammar or other readability improvements (current branch).
• [x ] Adjusted missing or incorrect information in the current documentation (current branch).
• Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logo's and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase:
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue:

Checklist

• [x ] This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• [x ] The documentation follows the Home Assistant documentation standards.