Update README.md

_examples/xmpp_pubsub_client/README.md

@@ -8,10 +8,10 @@ This is a simple example of a client that :
 * Gets the notification from the publication and prints it on screen
 
 ## Requirements
-You need to hve running jabber server, like [ejabberd](https://www.ejabberd.im/) that supports [XEP-0060](https://xmpp.org/extensions/xep-0060.html).
+You need to have a running jabber server, like [ejabberd](https://www.ejabberd.im/) that supports [XEP-0060](https://xmpp.org/extensions/xep-0060.html).
 
 ## How to use
 Just run : 
 ```
     go run xmpp_ps_client.go
-```
+```