Fix typo in admin protos
Fixes a small typo of `protcol` -> `protocol`.
@@ -335,7 +335,7 @@ message MemberReady {
string member_node_id = 2;
}
-// This message is sent to a connection AdminService to agree upon prtocol
+// This message is sent to a connection AdminService to agree upon protocol
// version.
//
// The sending service will provide the min and max protocol versions they
