Document <helpchan>.

Author: sadiepowell

docs/conf/modules.example.conf

@@ -1161,6 +1161,12 @@
 # as such to differentiate them from opers.
 # <helpmode ignorehideoper="no"
 #           markhelpers="yes">
+#
+# You can also define one or more channels which helpers will be given
+# a channel prefix mode in. If not otherwise specified the prefix mode
+# defaults to channel mode o (op).
+#
+# <helpchan name="#help-*" prefix="o">
 
 #-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#
 # Hide chans module: Allows users to hide their channels list from non-