Fix DO docs indentation & code errors

[ask-bonk]

All tasks are complete. Here's a summary of all changes made to src/content/docs/durable-objects/best-practices/rules-of-durable-objects.mdx:

Indentation fixes (16 code blocks)

Fixed broken indentation in 16 of 29 code examples where code had either:

• No indentation at all inside class methods/bodies (code flush to column 0)
• Mixed 4-spaces + tab indentation instead of consistent tab-only indentation
• 4 backticks (``````) closing code fences instead of standard 3 backticks (```)

All 27 occurrences of ```````` were replaced with standard ``` closings.

Affected code blocks:

1. SeatBooking example (method body + export default)
2. ChatRoom bad example (method body + export default)
3. newUniqueId example (export default)
4. Location hints example (export default)
5. SQLite ChatRoom example (type definition + constructor + methods)
6. In-memory state example (type definition + methods)
7. Output gates example (method body)
8. Race conditions example (method body)
9. RPC ChatRoom example (type definition + methods + export default)
10. Always await RPC example (export default)
11. Hibernatable WebSockets example (all methods)
12. Alarms GameMatch example (methods + try/catch block)
13. deleteAll example (method body)
14. Testing example (describe/it blocks)

Code correctness fixes (2 issues)

1. locationHint API usage (line ~394): Moved locationHint from idFromName() to get(), which is the correct API placement per the Cloudflare Workers runtime.
2. alarm() parameter type (line ~1307): Changed async alarm(alarmInfo) to async alarm(alarmInfo?: AlarmInvocationInfo) - added the proper type annotation and made the parameter optional to match the base class signature.

Closes #28155

github run

[elithrar]

LGTM - reviewed and the type fixes are valid.

[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/durable-objects/	@elithrar, @vy-ton, @joshthoward, @oxyjun, @lambrospetrou, @mikenomitch, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://2abe8f3e.preview.developers.cloudflare.com
Preview Branch URL: https://opencode-issue28155-20260206163134.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/durable-objects/best-practices/rules-of-durable-objects/	https://opencode-issue28155-20260206163134.preview.developers.cloudflare.com/durable-objects/best-practices/rules-of-durable-objects/