vendor: contributors: Add HTC One Mini 2 and HTC Desire 816 maintainers

Change-Id: I10f4796ad8a2b88ee2641a6071b6fa3241979036
Signed-off-by: Vaibhav Bhasin <bhasinvaibhav97@gmail.com>
diff --git a/CONTRIBUTORS.mkdn b/CONTRIBUTORS.mkdn
index 61f8035..fd1303c 100644
--- a/CONTRIBUTORS.mkdn
+++ b/CONTRIBUTORS.mkdn
@@ -18,9 +18,11 @@
 * __Google Nexus 5:__ fluxi
 * __Google Nexus 7:__ burnsra, fattire, nemith (GSM)
 * __Google Nexus 10:__ atinm, dalingrin, kornyone, gweedo767
+* __HTC Desire 816:__ Grarak, v_superuser
 * __HTC Droid DNA:__ crpalmer, invisiblek
 * __HTC Droid Incredible 4G LTE:__ intervigil, mdmower
 * __HTC Evo 4G LTE:__ kushdeck, toastcfh
+* __HTC One Mini 2:__ u-ra
 * __HTC One (GSM):__ codeworkx, h8rift
 * __HTC One (M8):__ deck, h8rift, invisblek, toastcfh
 * __HTC One Max (T6):__ flyhalf205, sbrissen