modules: readme files regenerated - permissions ... [skip ci]

src/modules/permissions/README

@@ -550,7 +550,8 @@ modparam("permissions", "ip_addr_col", "ip_address")
 
    Name of address table column containing the network mask of the
    address. Possible values are 0-32 for IPv4 and 0-128 for IPv6
-   addresses.
+   addresses. If the value is 0, the network mask is set to 32 for IPv4
+   addresses and to 128 for IPv6 addresses.
 
    Default value is “mask”.