hwmon: (sht3x)replace "high-precision" property to "repeatability"

Replace use of "precision" with "repeatability" to match
datasheet terminology.

No functional change.

Signed-off-by: JuenKit Yip <JuenKit_Yip@hotmail.com>
Link: https://lore.kernel.org/r/DB4PR10MB626113BFFA66DE32C3479D229258A@DB4PR10MB6261.EURPRD10.PROD.OUTLOOK.COM


[groeck: Added commit description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>