fix(terraform): correct stale "1.16 in development" claim

[stanfish06]

Summary

• SKILL.md claimed Terraform 1.15.x is current stable with "1.16 in development"; 1.16.x has actually been current stable since August 2026 (currently 1.16.3)
• Corrects the sentence; the OpenTofu ~1.12.x claim next to it was already accurate and is unchanged

Fixes #910

Note on generated navigation

This only changes prose in the body (not name/description), so the generated wrapper note is unaffected. Same ./skillquarium build sandbox limitation as noted in the sibling PRs — CI's rebuild-index.yml handles it on merge to master.

Test plan

• Verified current stable release independently via HashiCorp's terraform GitHub releases page (1.16.3, released 2026-09-16)

🤖 Generated with Claude Code

https://claude.ai/code/session_01GSjSNfsbDHtxu6d6FFVEGi

---

Generated by Claude Code

[coderabbitai]

Warning

Review limit reached

Next included review available in 59 minutes.

Check out review usage here.

View limit details

Limit details: You’ve used the included review currently available.

You've used all free OSS reviews for now. Wait for the free limit to reset to keep reviewing this public repository.

Learn how review limits work.

Review configuration:

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 46be990e-61c7-4e6a-942b-2013274d7a16

📥 Commits

Reviewing files that changed from the base of the PR and between be36d5c and 75a370c.

📒 Files selected for processing (1)

• skills/terraform/SKILL.md

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[stanfish06]

The "Code scanning AI findings" check (dynamic/agents/github-advanced-security) failed on this PR. It's not caused by this diff: the job log shows it dies before analyzing any files — SessionModelError: CAPIError: 400 The requested model is not supported from GitHub's Copilot Autofix backend, a repo-side infra/config issue. The same failure reproduces identically on the pre-existing, unrelated PR #906. The substantive Claude Code Review check passed. Not fixing this here since it's outside this PR's scope — flagging so it isn't mistaken for a content problem.

---

Generated by Claude Code