Changes

* 1. When use X832 with Raspberry Pi 4 only, use the <span style="color:red;">latching switch</span> to connect on X832 PWR SW port.

* 2. When use X832&X735 V3.0 with Raspberry Pi 4, use the <span style="color:red;">momentary switch</span> to connect on momentary switch port of X735 V3.0.

Note when X832 V1.0 use with <span style="color:red;">X735 V3.0</span>: