MAINTAINERS: fix Analog Devices forum links

Fix the links to redirect to the correct forum subsection for the latest
Analog Devices drivers added.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://lore.kernel.org/r/20220824170913.13411-1-antoniu.miclaus@analog.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>