mod-dnsproxy: improve example description

src/knot/modules/dnsproxy/dnsproxy.rst

@@ -15,7 +15,7 @@ There are several uses of this feature:
 
 .. NOTE::
    The module does not alter the query/response as the resolver would,
-   and the original transport protocol is kept as well.
+   and the original transport protocol (UDP or TCP) is kept as well.
 
 Example
 -------
@@ -39,9 +39,9 @@ required::
    zone:
      - domain: local.zone
 
-When clients query for anything in the ``local.zone``, they will be
-responded to locally. The rest of the requests will be forwarded to the
-specified server (``10.0.1.1`` in this case).
+When a client queries anything in the ``local.zone`` (which must exist),
+it will receive a local response. All other requests (to unknown zones)
+will be forwarded to the specified server (``10.0.1.1`` in this case).
 
 Module reference
 ----------------