uac: fix typo

Thanks, lintian
> I: kamailio: spelling-error-in-binary usr/lib/x86_64-linux-gnu/kamailio/modules/uac.so registred registered

src/modules/uac/doc/uac_admin.xml

@@ -953,7 +953,7 @@ event_route[uac:reply] {
 				<emphasis>regtotal</emphasis>: Total number of registrations
 			</para></listitem>
 			<listitem><para>
-				<emphasis>regactive</emphasis>: Total number of active registrations (successfully registred with service)
+				<emphasis>regactive</emphasis>: Total number of active registrations (successfully registered with service)
 			</para></listitem>
 			<listitem><para>
 				<emphasis>regdisabled</emphasis>: Total number of disabled registrations (no longer active)

src/modules/uac/uac_reg.c

@@ -172,7 +172,7 @@ static void uac_reg_counter_init()
 {
 	LM_DBG("*** Initializing UAC reg counters\n");
 	counter_register(&regtotal, "uac", "regtotal", 0, 0, 0, "Total number of registration accounts in memory", 0);
-	counter_register(&regactive, "uac", "regactive", 0, 0, 0, "Number of successfully registred accounts (200 OK)", 0);
+	counter_register(&regactive, "uac", "regactive", 0, 0, 0, "Number of successfully registered accounts (200 OK)", 0);
 	counter_register(&regdisabled, "uac", "regdisabled", 0, 0, 0, "Counter of failed registrations (not 200 OK)", 0);
 }