Update docs

misc/toxic.conf.example

@@ -8,6 +8,18 @@ ui = {
   // true to enable terminal alerts on messages, false to disable
   alerts=true;
 
+  // Beep when receiving a message
+  beep_on_message=true
+
+  // Beep when receiving a filetransfer
+  beep_on_filetrans=true
+
+  // Don't beep when a filetransfer was accepted
+  beep_on_filetrans_accept=false
+
+  // Beep when receiving a group/call invite
+  beep_on_invite=true
+
   // true to use native terminal colours, false to use toxic default colour theme
   native_colors=false;