OWNERS: master -> main

Change-Id: I81698884d8ac3edd85302acbabd2c4e34d3741cb
diff --git a/OWNERS b/OWNERS
index 45dc4dd..5a2b844 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1 +1 @@
-include platform/prebuilts/rust:master:/OWNERS
+include platform/prebuilts/rust:main:/OWNERS