fix issue with wrong number in the number count

public/js/paper_nextpage.js

@@ -44,7 +44,7 @@ var nextpage = function() {
                 document.getElementById("previousbutton").disabled = true;
             }
             startnumb += 1
-            endnumb += 1
+            // endnumb += 1
             if (endnumb >= stuff_paper.length){
                 endnumb = stuff_paper.length
                 document.getElementById("nextbutton").disabled = true;