Add missing API ref docs for the invalidationBehavior option for createApi

[markerikson]

We merged #3116 for the new invalidationBehavior setting in RTK 2.0, but never actually covered that in the API docs. Needs to be covered in the createApi options.

We do have a docblock with a description here:

redux-toolkit/packages/toolkit/src/query/createApi.ts

Lines 154 to 163 in e848a55

	/**
	* Defaults to `'delayed'`. This setting allows you to control when tags are invalidated after a mutation.
	*
	* - `'immediately'`: Queries are invalidated instantly after the mutation finished, even if they are running.
	* If the query provides tags that were invalidated while it ran, it won't be re-fetched.
	* - `'delayed'`: Invalidation only happens after all queries and mutations are settled.
	* This ensures that queries are always invalidated correctly and automatically "batches" invalidations of concurrent mutations.
	* Note that if you constantly have some queries (or mutations) running, this can delay tag invalidations indefinitely.
	*/
	invalidationBehavior?: 'delayed' | 'immediately'

and createApi.mdx already uses a build-time system that can pull docblock descriptions from the code into the Markdown file:

### `tagTypes`

[summary](docblock://query/createApi.ts?token=CreateApiOptions.tagTypes)

[examples](docblock://query/createApi.ts?token=CreateApiOptions.tagTypes)

So, we'll want to add another header section for the invalidationBehavior option and include the summary there, as well as possibly add more description or examples.