Fix bullet points (#12574)

The bullet points appear incorrectly on the page still, in two different places. Hopefully this will fix it

doc/Extensions/Distributed-Poller.md

@@ -4,6 +4,7 @@ path: blob/master/doc/
 # Distributed Poller
 
 A normal install contains all parts of LibreNMS:
+
 - Poller/Discovery/etc workers
 - RRD (Time series data store) *
 - Database *
@@ -24,6 +25,7 @@ RRDcached.
 It is also a requirement that at least one locking service is in place
 to which all pollers can connect. There are currently three locking 
 mechanisms available
+
 - memcached
 - redis (preferred)
 - sql locks (default)