hwmon: (sht3x) add sts3x support

Add information regarding the existing support for sts3x series and
update the datasheet links.

Signed-off-by: Stefan Gloor <code@stefan-gloor.ch>
Link: https://lore.kernel.org/r/20231204165004.8491-2-code@stefan-gloor.ch


Signed-off-by: Guenter Roeck <linux@roeck-us.net>