DOC: management: httpclient can resolve server names in URLs

The httpclient does support DNS resolution since 2.6.

Must be backported to 2.6.

doc/management.txt

@@ -2145,8 +2145,11 @@ help [<command>]
 httpclient <method> <URI>
   Launch an HTTP client request and print the response on the CLI. Only
   supported on a CLI connection running in expert mode (see "expert-mode on").
-  It's only meant for debugging. It currently can't resolve FQDN so your URI must
-  contains an IP.
+  It's only meant for debugging. The httpclient is able to resolve a server
+  name in the URL using the "default" resolvers section, which is populated
+  with the DNS servers of your /etc/resolv.conf by default. However it won't be
+  able to resolve an host from /etc/hosts if you don't use a local dns daemon
+  which can resolve those.
 
 new ssl ca-file <cafile>
   Create a new empty CA file tree entry to be filled with a set of CA