Change help-2-0 to help-v2 in URL references (I think this looks better)

Author: dpvc

config/AM_HTMLorMML-full.js

@@ -946,7 +946,7 @@ MathJax.Hub.Config({
     //
     //  This is the URL for the MathJax Help menu item.
     //
-    helpURL: "http://www.mathjax.org/help-2-0/user/",
+    helpURL: "http://www.mathjax.org/help-v2/user/",
 
     //
     //  These control whether the "Math Renderer", "MathPlayer", "Font

config/AM_HTMLorMML.js

@@ -946,7 +946,7 @@ MathJax.Hub.Config({
     //
     //  This is the URL for the MathJax Help menu item.
     //
-    helpURL: "http://www.mathjax.org/help-2-0/user/",
+    helpURL: "http://www.mathjax.org/help-v2/user/",
 
     //
     //  These control whether the "Math Renderer", "MathPlayer", "Font

config/Accessible-full.js

@@ -180,7 +180,7 @@
         "MathJax can use either the ",
         ["a",{href:"http://www.stixfonts.org/",target:"_blank"},"STIX fonts"],
         " or the ",
-        ["a",{href:"http://www.mathjax.org/help-2-0/fonts/",target:"_blank"},["MathJax TeX fonts"]],
+        ["a",{href:"http://www.mathjax.org/help-v2/fonts/",target:"_blank"},["MathJax TeX fonts"]],
         ".  Download and install either one to improve your MathJax experience."
       ],
 
@@ -194,7 +194,7 @@
       TeXfonts: [
         ["p"],
         "This page is designed to use the ",
-        ["a",{href:"http://www.mathjax.org/help-2-0/fonts/",target:"_blank"},["MathJax TeX fonts"]],
+        ["a",{href:"http://www.mathjax.org/help-v2/fonts/",target:"_blank"},["MathJax TeX fonts"]],
         ".  Download and install those fonts to improve your MathJax experience."
       ]
 

config/Accessible.js

@@ -38,7 +38,7 @@
 
   var CONFIG = HUB.CombineConfig("MathMenu",{
     delay: 150,                                    // the delay for submenus
-    helpURL: "http://www.mathjax.org/help-2-0/user/",  // the URL for the "MathJax Help" menu
+    helpURL: "http://www.mathjax.org/help-v2/user/",  // the URL for the "MathJax Help" menu
     closeImg: AJAX.fileURL(OUTPUT.imageDir+"/CloseX-31.png"), // image for close "X" for mobiles
 
     showRenderer: true,                            //  show the "Math Renderer" menu?