Update links to smartthings developer website

[mbo18]

Proposed change

Smartthings developer website has changed, so I updated all links the smartthings documentation

Type of change

• Spelling, grammar or other readability improvements (current branch).
• 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: fixes #

Checklist

• 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.
• The documentation follows the Home Assistant documentation standards.

[frenck]

Hi there @mbo18 👋

Any specific reason for this PR to be marked as draft at this point?

../Frenck

[mbo18]

Not really because it is finished. It includes the change I made in this PR: #22903
So I’m waiting for next week as I used the current branch (I don’t know if it matters or not)

[frenck]

If this PR contains two different changes (on to the existing documentation and another for new features), it should be split into separate PRs.

Please, if a merged new feature lands in HA 2022.7, that part should target the next branch.

[mbo18]

I've updated my PR (no more conflict + added a link I missed). It is now ready for review.
This PR now only contains updated links and so it is using the correct branch (current)

[frenck]

Thanks, @mbo18 👍