(legacy) change help text to reflect reality, closes https://github.com/opnsense/core/issues/708

(cherry picked from commit 1a891bc4)

src/www/firewall_aliases_edit.php

@@ -452,7 +452,7 @@ include("head.inc");
                             <?=gettext("Networks")?><br/>
                           </span>
                           <small>
-                            <?=gettext("Networks are specified in CIDR format.  Select the CIDR mask that pertains to each entry. /32 specifies a single IPv4 host, /128 specifies a single IPv6 host, /24 specifies 255.255.255.0, /64 specifies a normal IPv6 network, etc. Hostnames (FQDNs) may also be specified, using a /32 mask for IPv4 or /128 for IPv6. You may also enter an IP range such as 192.168.1.1-192.168.1.254 and a list of CIDR networks will be derived to fill the range.");?>
+                            <?=gettext("Networks are specified in CIDR format.  Select the CIDR mask that pertains to each entry. /32 specifies a single IPv4 host, /128 specifies a single IPv6 host, /24 specifies 255.255.255.0, /64 specifies a normal IPv6 network, etc. Hostnames (FQDNs) may also be specified, using a /32 mask for IPv4 or /128 for IPv6.");?>
                             <br/>
                           </small>
                           <span class="text-info">