add docs for option silentReactInterpolationWarning

[delta-9]

docs for i18next/react-i18next#1825

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[adrai]

I don't think suppressing the warning is the correct way. Since that option will always be set to true (copy-pasted by some Stackoverflow response or similar) and no warning will ever be shown again.
The warning is relevant so the devs fix their code.
We can talk about optimising the log output, but I don't think it's a good idea to introduce a warning suppression option like that.
What do you think @jamuhl ?

[jamuhl]

@adrai agree...if needed I would go the optimising way -> eg. reusing the i18next logger (for all logging - beside the few cases where we log the missing i18n instance). That way if really needed to mute - one could use a own logger in i18next.

[adrai]

With react-i18next v15.3.0 now the i18next debug option is considered, because it will use the i18next logger if there is a valid i18next instance for that log message.
So now you can set the debug flag to false, or create your own logger: https://www.i18next.com/misc/creating-own-plugins#logger