[AWARE] Minor fix to documentation for Aware + Discovery

Clarify that limits include "=". This is particuarly critical for
the lower range value of 0 since in very close quarters measurements
will result in negative values which will be translated to a 0 - i.e.
must have >=0 for ranging to trigger discovery.

Bug: 65108607
Test: N/A
Change-Id: I443c2fff7fe8dad6133d66a82f645a8304787f4c