docs: Convert 'formatnwfilter' page to rst

Also adjust direct links from other pages.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

docs/firewall.rst

@@ -250,7 +250,7 @@ source IP address ``!= $IP`` like this:
 
 I'm not going to go into details on all the other protocol matches you can do,
 because it'll take far too much space. You can read about the options
-`here <formatnwfilter.html#nwfelemsRulesProto>`__.
+`here <formatnwfilter.html#supported-protocols>`__.
 
 Out of the box in RHEL6/Fedora rawhide, libvirt ships with a set of default
 useful rules:

docs/formatdomain.rst

@@ -5845,7 +5845,8 @@ complete details.
 The ``filter`` attribute specifies the name of the nwfilter to use. Optional
 ``<parameter>`` elements may be specified for passing additional info to the
 nwfilter via the ``name`` and ``value`` attributes. See the
-`nwfilter <formatnwfilter.html#nwfconceptsvars>`__ docs for info on parameters.
+`nwfilter <formatnwfilter.html#usage-of-variables-in-filters>`__ docs for info
+on parameters.
 
 :anchor:`<a id="elementsInput"/>`
 

docs/meson.build

@@ -21,7 +21,6 @@ docs_html_in_files = [
   'formatcaps',
   'formatnetwork',
   'formatnode',
-  'formatnwfilter',
   'index',
   'remote',
   'storage',
@@ -74,6 +73,7 @@ docs_rst_files = [
   'formatdomain',
   'formatdomaincaps',
   'formatnetworkport',
+  'formatnwfilter',
   'formatsecret',
   'formatsnapshot',
   'formatstorage',