Fix typos in zmq.md

doc/zmq.md

@@ -2,11 +2,11 @@
 
 [ZeroMQ](http://zeromq.org/) is a lightweight wrapper around TCP
 connections, inter-process communication, and shared-memory,
-providing various message-oriented semantics such as publish/subcribe,
+providing various message-oriented semantics such as publish/subscribe,
 request/reply, and push/pull.
 
 The Zcash daemon can be configured to act as a trusted "border
-router", implementing the zcash wire protocol and relay, making
+router", implementing the Zcash wire protocol and relay, making
 consensus decisions, maintaining the local blockchain database,
 broadcasting locally generated transactions into the network, and
 providing a queryable RPC interface to interact on a polled basis for
@@ -102,6 +102,6 @@ and just the tip will be notified. It is up to the subscriber to
 retrieve the chain from the last known block to the new tip.
 
 There are several possibilities that ZMQ notification can get lost
-during transmission depending on the communication type your are
+during transmission depending on the communication type you are
 using. Zcashd appends an up-counting sequence number to each
 notification which allows listeners to detect lost notifications.