Added reference to documentation

web/democode/perleditor.html

@@ -25,6 +25,8 @@ You should have received a copy of the licenses along with this program.
 If not, see http://perldoc.perl.org/index-licence.html
 ##### -->
 
+<!-- Please see the documentation on how to use this in demo.html. -->
+
 <!--cacheable--><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/8.0.0/normalize.min.css" integrity="sha256-oSrCnRYXvHG31SBifqP2PM1uje7SJUyX0nTwO2RJV54=" crossorigin="anonymous" />
 <!--cacheable--><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.2/codemirror.min.css" integrity="sha256-I8NyGs4wjbMuBSUE40o55W6k6P7tu/7G28/JGUUYCIs=" crossorigin="anonymous" />
 <link rel="stylesheet" href="perleditor.css" />

web/democode/perlrunner.html

@@ -25,6 +25,8 @@ You should have received a copy of the licenses along with this program.
 If not, see http://perldoc.perl.org/index-licence.html
 ##### -->
 
+<!-- Please see the documentation on how to use this in demo.html. -->
+
 <!-- Possible To-Do for Later: This whole thing could probably also be
 	accomplished with a Web Worker, but that would probably require a
 	stripped-down version of webperl.js (that loads things without