Update HTML documentation from man pages

doc/html/man5/3proxy.cfg.5.html

@@ -897,13 +897,18 @@ argument, with 0.0.0.0 as the address, for example <b>parent
 be asked to pick the port itself (Linux
 <b>IP_LOCAL_PORT_RANGE</b>) it does, otherwise a port is
 picked at random from the range and retried if it is already
-in use, up to ten times. On Linux the range has to lie
+in use, up to ten times. A port which binds but whose pair
-within <i>net.ipv4.ip_local_port_range</i>, commonly
+with the destination is still closing from an earlier
-32768-60999: the kernel ignores a range outside it and picks
+connection, which Windows refuses at the connect, is retried
-an ordinary ephemeral port instead. If no port in the range
+in the same way and out of the same ten tries, so a repeated
-can be bound, an ephemeral port is used rather than failing
+connection to one destination does not fail for a port it
-the connection. It can be chained with another parent type,
+has just used. On Linux the range has to lie within
-and the access rule it belongs to decides which requests it
+<i>net.ipv4.ip_local_port_range</i>, commonly 32768-60999:
+the kernel ignores a range outside it and picks an ordinary
+ephemeral port instead. If no port in the range can be
+bound, an ephemeral port is used rather than failing the
+connection. It can be chained with another parent type, and
+the access rule it belongs to decides which requests it
 applies to, so <b>allow * * * * UDPASSOC</b> followed by
 <b>parent 1000 extport 0.0.0.0 40000-40100</b> limits it to
 UDP associations. The range is applied when the outgoing