Docs: Fix a Typo in Intro to ART Document

In Enabling ART in Android Build section, correct a copy-paste typo 'libdvm.mk' -> 'libart.mk'

Change-Id: I30bcb43d137b75d3eb00caff5774f8a8ad62619b
Signed-off-by: Pipat Methavanitpong <pipat1010@gmail.com>
1 file changed