Update generated-code.md

Author: yashykt

docs/reference/go/generated-code.md

@@ -11,7 +11,7 @@ when compiling `.proto` files with `protoc`.
 You can find out how to define a gRPC service in a `.proto` file in [Service Definitions](../guides/concepts.html#service-definition).
 
 <p class="note"><strong>Thread-safety</strong>: note that client-side RPC invocations and server-side RPC handlers <i>are thread-safe</i> and are meant
-to be ran on concurrent goroutines. But also note that for <i>individual streams</i>, incoming and outgoing data is bi-directional but serial;
+to be run on concurrent goroutines. But also note that for <i>individual streams</i>, incoming and outgoing data is bi-directional but serial;
 so e.g. <i>individual streams</i> do not support <i>concurrent reads</i> or <i>concurrent writes</i> (but reads are safely concurrent <i>with</i> writes).
 </p>