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
diff --git a/docs/html/images/ui/sample-linearlayout.png b/docs/html/images/ui/sample-linearlayout.png
index c4beb93a..04c9259 100644
--- a/docs/html/images/ui/sample-linearlayout.png
+++ b/docs/html/images/ui/sample-linearlayout.png
Binary files differ