Context documentation mistake

### Describe the bug

The part with 'context is not inherently reactive' - the docs show setContext in parent, and then setContext again in child to retrieve the value, where it should be getContext instead.

### Reproduction

https://svelte.dev/docs/svelte/context#Setting-and-getting-context

### Logs

_No response_

### System Info

```shell
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### Severity

annoyance