Update `//proto` rules to provide all required dependencies. (#868)

diff --git a/docs/rust_proto.vm b/docs/rust_proto.vm
index 488dcf4..9067510 100644
--- a/docs/rust_proto.vm
+++ b/docs/rust_proto.vm
@@ -18,6 +18,10 @@
 load("@rules_rust//proto:repositories.bzl", "rust_proto_repositories")
 
 rust_proto_repositories()
+
+load("@rules_rust//proto:transitive_repositories.bzl", "rust_proto_transitive_repositories")
+
+rust_proto_transitive_repositories()
 ```
 
 [raze]: https://github.com/google/cargo-raze