`google_hotels` source incorrect documentation

[UmanShahzad]

In this point from @Ryouku 's message:

7. google_hotels source doesn’t actually have results_language param. This should be passed via context:results_language instead.

There's a mistake in the documentation, as it contains the results_language param (as well as the context:-prefixed one). We'll remove it from the code but the docs need a fix?

@efgh5678 is this your domain?