Add important callout in README for colima users

[drewble]

Description

Update the "Adding a new SDK" section README to include a critical note for developers using Colima to run docker.

References

Review Checklist

• I have clicked on "allow edits by maintainers".
• I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• The correct base branch is being used, if not main
• I have added tests to validate that the change in functionality is working as expected

[linux-foundation-easycla]

• ❌ - login: @drewble . The commit (00f3be0) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[rhamzeh]

@drewble - may I ask if you can sign the Linux Foundation's/CNCF's EasyCLA above? #458 (comment)

[rhamzeh]

@drewble just a quick ping :)

[dyeam0]

Hi @drewble, just checking in to see if you are still interested in submitting this PR.

[curfew-marathon]

This PR has had no human activity for 90 days, so it has been marked lifecycle/stale.

This is automated backlog grooming, not a judgment on the work.

What happens next, unless there is activity:

• In 30 days, it will move to lifecycle/closing-soon
• 30 days after that, it will be closed

To keep it open, push a commit or leave a comment, and the clock will reset. For work that should not auto-close, such as an RFC or long-running experiment, ask a maintainer to add lifecycle/frozen.

[curfew-marathon]

This PR has had no human activity for 30 days since being marked lifecycle/stale, so it has now been marked lifecycle/closing-soon.

It will be closed in 30 days unless there is new activity.

If the work still matters, this is the moment to say so: leave a comment, push a commit, or ask a maintainer to add lifecycle/frozen if it should be kept open long-term.

If this work is no longer being pursued, no action is needed.