docs: Changed screenshot to use layout name
docs: Changed screenshot to use layout name

Updated doc is staged to:

http://asolovay.mtv:9125/guide/topics/ui/layout/linear.html#Example

bug: 15940125
Change-Id: I1628fd6527a02516bf288340059db433f591ac7e

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base