Updates description of CROPPED image display option
Updates description of CROPPED image display option

Clarifies the behavior of this option.

Testing experimental scripts

Test: No tests
Change-Id: I7937ee698604d6f020e5255af7967e73d048c327

actions-on-google/actions-on-google-nodejs,actions-on-google/actions-on-google-nodejs,actions-on-google/actions-on-google-nodejs