res_pjsip: Fix typo in from_domain documentation

This fixes a small typo in the from_domain documentation on the endpoint documentation

ASTERISK-30328 #close

Change-Id: Ia6f0897c3f5cab899ef2cde6b3ac07265b8beb21

res/res_pjsip/pjsip_config.xml

@@ -1010,7 +1010,7 @@
 					<synopsis>Username to use in From header for unsolicited MWI NOTIFYs to this endpoint.</synopsis>
 				</configOption>
 				<configOption name="from_domain">
-					<synopsis>Domain to user in From header for requests to this endpoint.</synopsis>
+					<synopsis>Domain to use in From header for requests to this endpoint.</synopsis>
 				</configOption>
 				<configOption name="dtls_verify">
 					<synopsis>Verify that the provided peer certificate is valid</synopsis>