Update modules.conf.example with m_topiclock

docs/conf/modules.conf.example

@@ -1764,6 +1764,11 @@
 # To use, TLINE must be in one of your oper class blocks.
 #<module name="m_tline.so">
 
+#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#
+# Topiclock module: implements server-side topic locking to achieve deeper
+# integration with services packages.
+#<module name="m_topiclock.so">
+
 #-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#
 # UHNAMES support module: Adds support for the IRCX style UHNAMES
 # extension, which displays ident and hostname in the names list for