textops: documentaton updated for is_audio_on_hold()

 - reported by Julia Boudniatsky <[email protected]>

src/modules/textops/doc/textops.xml

@@ -34,6 +34,11 @@
 		<surname>Heinanen</surname>
 			<email>[email protected]</email>
 		</editor>
+		<editor>
+		<firstname>Ovidiu</firstname>
+		<surname>Sas</surname>
+			<email>[email protected]</email>
+		</editor>
 	</authorgroup>
 	<copyright>
 		<year>2003</year>

src/modules/textops/doc/textops_admin.xml

@@ -1258,6 +1258,8 @@ if(has_body("application/sdp"))
 		<para>
 		The function returns <emphasis>true</emphasis> if the SIP message
 		has a body attached and at least one audio stream in on hold.
+		Only RFC2543 is supported (c=0.0.0.0).
+		Hold detection based on RFC3264 is not supported (a=sendonly/inactive).
 		</para>
 		<para>
 		This function can be used from REQUEST_ROUTE, ONREPLY_ROUTE,