fix: always return string from helper

if value ended up being 0 it wasnt output

public/src/modules/helpers.common.js

@@ -324,7 +324,7 @@ module.exports = function (utils, Benchpress, relative_path) {
 	}
 
 	function increment(value, inc) {
-		return value + parseInt(inc, 10);
+		return String(value + parseInt(inc, 10));
 	}
 
 	function generateRepliedTo(post, timeagoCutoff) {