modules/ims_qos: modified comment to reflect correct behaviour of reg…

…ex_sdp_ip_prefix_to_maintain_in_fd

modules/ims_qos/mod.c

@@ -100,8 +100,8 @@ int cdp_event_latency_loglevel = 0; /*log-level to use to report slow processing
 int audio_default_bandwidth = 64;
 int video_default_bandwidth = 128;
 
-//If set then any IP in SDP that does not match this regex is replaced with any in flow description AVP
-//V useful for UEs that change ports mid way through call therefore breaking flow description filters
+//If set then any IP in SDP that does not match this regex then filter is added with any in flow description AVP
+//Very useful for UEs that change ports mid way through call therefore breaking flow description filters
 str regex_sdp_ip_prefix_to_maintain_in_fd = {0, 0};
 
 int cdp_event_list_size_threshold = 0; /**Threshold for size of cdp event list after which a warning is logged */