OWNERS: master -> main

Change-Id: I7a42812cabd151dc3742a36d3b3a7a0e0f9127b8
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