Fix invalid closing link (#47)

Fixes #39

Author: obukhow

app/helpers/getTryItNow.js

@@ -14,5 +14,5 @@ module.exports = function (value, options) {
     const variablesQuery = variables ? `&variables=${encodeURIComponent(variables)}` : ""
 
     var url = `${options.data.root.servers[0].url}?query=${encodeURIComponent(query)}${variablesQuery}`;
-    return new Handlebars.SafeString(`<a href="${url}" target="_blank">Try it now<a/>\n`);
-}
+    return new Handlebars.SafeString(`<a href="${url}" target="_blank">Try it now</a>\n`);
+}