update manta maintainers

Change-Id: I5e57c657010c60bc1b1359f883ca1d4f2f851da7
diff --git a/CONTRIBUTORS.mkdn b/CONTRIBUTORS.mkdn
index 37b782a..0c85ed9 100644
--- a/CONTRIBUTORS.mkdn
+++ b/CONTRIBUTORS.mkdn
@@ -13,7 +13,7 @@
 * __Google Nexus S:__ burnsra, KalimochoAz
 * __Google Nexus 4:__ rmcc
 * __Google Nexus 7:__ burnsra, fattire, nemith (GSM)
-* __Google Nexus 10:__ atinm, dalingrin, kornyone
+* __Google Nexus 10:__ atinm, dalingrin, kornyone, gweedo767
 * __HTC Droid Incredible 4G LTE:__ intervigil, mdmower
 * __HTC Evo 4G LTE:__ kushdeck, toastcfh
 * __HTC One (GSM):__ codeworkx, h8rift