Fix description of return value of reduce_on_network

changelogs/fragments/fix_description.yaml

@@ -0,0 +1,3 @@
+---
+doc_changes:
+  - Fix the description of the reduce_on_network filter.

docs/ansible.utils.reduce_on_network_filter.rst

@@ -120,7 +120,7 @@ Common return values are documented `here <https://docs.ansible.com/ansible/late
                 </td>
                 <td></td>
                 <td>
-                            <div>Returns whether an address or a network passed as argument is in a network.</div>
+                            <div>Returns the filtered list of addresses belonging to the network.</div>
                     <br/>
                 </td>
             </tr>

plugins/filter/reduce_on_network.py

@@ -85,7 +85,7 @@ class mac_linux(netaddr.mac_unix):
   data:
     type: bool
     description:
-      - Returns whether an address or a network passed as argument is in a network.
+      - Returns the filtered list of addresses belonging to the network.
 
 """