Update Wear OS docs for multiple Shortcuts tiles support

[marazmarci]

Describe a new beta feature where any number of Shortcuts tiles can be added

PR for the feature: https://github.com/home-assistant/android/pull/3697

[jpelgrom]

only limited by Wear OS's limit for the max number of total tiles

Saying the same thing twice; I think it is maximum amount or total number.

[marazmarci]

only limited by Wear OS's limit for the max number of total tiles

Saying the same thing twice; I think it is maximum amount or total number.

Thanks, you're totally right. I changed it to Wear OS's limit for the total number of tiles. in b5df5df.