Updated try.freemarker.org domain
diff --git a/src/main/docgen/docgen.cjson b/src/main/docgen/docgen.cjson
index c8bc82d..3e79625 100644
--- a/src/main/docgen/docgen.cjson
+++ b/src/main/docgen/docgen.cjson
@@ -66,7 +66,7 @@
   faq: "docs/app_faq.html"
   
   // External URL-s:
-  onlineTemplateTester: "http://try.freemarker.org/"
+  onlineTemplateTester: "https://try.apache.freemarker.org/"
   twitter: "https://twitter.com/freemarker"
   gitFreemarker: "https://git-wip-us.apache.org/repos/asf/freemarker.git"
   githubMirrorFreemarker: "https://github.com/apache/freemarker"