CBLT-252:  fix typo in file name: android_artifacts_build.log

Change-Id: I56552f30236728b085e33ef061103b5965c2fda6
Reviewed-on: http://review.couchbase.org/35116
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>