modules/msrp : small documentation fix

modules/msrp/README

@@ -99,7 +99,7 @@ Chapter 1. Admin Guide
    negotiated via INVITE-200 OK-ACK.
 
    However, MSRP is still a text-based protocol. It uses several routing
-   mechanisms similar to what exists in SIP. Furthermore, MSRP requres
+   mechanisms similar to what exists in SIP. Furthermore, MSRP requires
    TCP, and recommends TLS for confidentiality and security. In light of
    the scalability and performance of Kamailio in handling TCP/TLS, this
    module reuses Kamailio's core framework to offer MSRP routing

modules/msrp/doc/msrp_admin.xml

@@ -29,7 +29,7 @@
 	<para>
 		However, MSRP is still a text-based protocol.  It uses several routing
 		mechanisms similar to what exists in SIP. Furthermore,
-		MSRP requres TCP, and recommends TLS for confidentiality and security.
+		MSRP requires TCP, and recommends TLS for confidentiality and security.
 		In light of the scalability and performance of &kamailio; in handling
 		TCP/TLS, this module reuses &kamailio;'s core framework to
 		offer MSRP routing capabilities. Along with embedded Presence and XCAP