shaper: fix a string to match another one in cron

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

@@ -54,7 +54,7 @@
                 <origin type="TextField">
                     <Required>N</Required>
                     <mask>/^([a-z,A-Z,1-9]){0,30}$/</mask>
-                    <ValidationMessage>origin should be regular text of max 30 characters</ValidationMessage>
+                    <ValidationMessage>Origin should be regular text of max 30 characters</ValidationMessage>
                 </origin>
                 <description type="TextField">
                     <Required>Y</Required>