src: more translation tweaks

Suggested by: @Antonio-Prado

src/opnsense/mvc/app/controllers/OPNsense/Proxy/forms/main.xml

@@ -25,7 +25,7 @@
                 <id>proxy.general.logging.target</id>
                 <label>Log target</label>
                 <type>dropdown</type>
-                <help>Send log data to.</help>
+                <help>Send log data to the selected target.</help>
                 <advanced>true</advanced>
             </field>
 

src/opnsense/mvc/app/models/OPNsense/Proxy/Proxy.xml

@@ -285,7 +285,7 @@
                             <filename type="TextField">
                                 <Required>Y</Required>
                                 <Mask>/^[a-zA-Z0-9]{1,245}\.?[a-zA-z0-9]{1,10}$/</Mask>
-                                <ValidationMessage>The filename may only contain letters,digits and one dot (not required).</ValidationMessage>
+                                <ValidationMessage>The filename may only contain letters, digits and one dot (not required).</ValidationMessage>
                                 <Constraints>
                                     <check001>
                                         <ValidationMessage>Filename should be unique</ValidationMessage>

src/www/system_advanced_firewall.php

@@ -272,8 +272,6 @@ include("head.inc");
                     <div class="hidden" for="help_for_natreflection">
                       <strong><?=gettext("When enabled, this automatically creates additional NAT redirect rules for access to port forwards on your external IP addresses from within your internal networks.");?></strong>
                       <br /><br />
-                      <?=gettext("The NAT + proxy mode uses a helper program to send packets to the target of the port forward. It is useful in setups where the interface and/or gateway IP used for communication with the target cannot be accurately determined at the time the rules are loaded. Reflection rules are not created for ranges larger than 500 ports and will not be used for more than 1000 ports total between all port forwards. Only TCP and UDP protocols are supported.");?>
-                      <br /><br />
                       <?=gettext("The pure NAT mode uses a set of NAT rules to direct packets to the target of the port forward. It has better scalability, but it must be possible to accurately determine the interface and gateway IP used for communication with the target at the time the rules are loaded. There are no inherent limits to the number of ports other than the limits of the protocols. All protocols available for port forwards are supported.");?>
                       <br /><br />
                       <?=gettext("Individual rules may be configured to override this system setting on a per-rule basis.");?>