added missing redirect

Author: Mikejo5000

.openpublishing.redirection.json

@@ -4926,6 +4926,11 @@
            "redirect_url":  "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Assignment_Operators",
            "redirect_document_id":  false
        },
+       {
+        "source_path":  "scripting-docs/javascript/reference/comma-operator-decrement-javascript.md",
+        "redirect_url":  "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Comma_Operator",
+        "redirect_document_id":  false
+       },
        {
            "source_path":  "scripting-docs/javascript/reference/conditional-ternary-operator-decrement-javascript.md",
            "redirect_url":  "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Conditional_Operator",

scripting-docs/javascript/javascript-language-reference.md

@@ -29,7 +29,7 @@ manager: "ghogen"
  This documentation describes the Microsoft implementation of JavaScript, which is compliant with the ECMAScript Language Specification 5th Edition. It also provides additional features that are not included in the ECMA Standards.  
 
 > [!IMPORTANT]
-> We have joined the community-wide effort to make [MDN web docs](https://developer.mozilla.org/en-US/) the web’s one-stop, premiere development resource, starting by redirecting all (500+ pages) of Microsoft’s JavaScript API reference from docs.microsoft.com to their MDN counterparts. For details, see this [announcement](https://blogs.windows.com/msedgedev/2017/10/18/documenting-web-together-mdn-web-docs/#kATurs7yL2KOjFcz.97).
+> We have joined the community-wide effort to make [MDN web docs](https://developer.mozilla.org/en-US/) the web’s one-stop, premiere development resource, by redirecting all (500+ pages) of Microsoft’s JavaScript API reference from docs.microsoft.com to their MDN counterparts. For details, see this [announcement](https://blogs.windows.com/msedgedev/2017/10/18/documenting-web-together-mdn-web-docs/#kATurs7yL2KOjFcz.97).
   
  You can use [!INCLUDE[javascript](../javascript/includes/javascript-md.md)] code in browser applications together with HTML, CSS and the Document Object Model (DOM), which represents HTML and browser objects.  
 

scripting-docs/javascript/reference/javascript-reference.md

@@ -27,7 +27,7 @@ manager: "ghogen"
 These sections explain the elements that make up the [!INCLUDE[javascript](../../javascript/includes/javascript-md.md)] language.  
 
 > [!IMPORTANT]
-> We have joined the community-wide effort to make [MDN web docs](https://developer.mozilla.org/en-US/) the web’s one-stop, premiere development resource, starting by redirecting all (500+ pages) of Microsoft’s JavaScript API reference from docs.microsoft.com to their MDN counterparts. For details, see this [announcement](https://blogs.windows.com/msedgedev/2017/10/18/documenting-web-together-mdn-web-docs/#kATurs7yL2KOjFcz.97).
+> We have joined the community-wide effort to make [MDN web docs](https://developer.mozilla.org/en-US/) the web’s one-stop, premiere development resource, by redirecting all (500+ pages) of Microsoft’s JavaScript API reference from docs.microsoft.com to their MDN counterparts. For details, see this [announcement](https://blogs.windows.com/msedgedev/2017/10/18/documenting-web-together-mdn-web-docs/#kATurs7yL2KOjFcz.97).
   
  [!INCLUDE[javascript](../../javascript/includes/javascript-md.md)] code in Internet Explorer can interact with HTML, CSS and the Document Object Model (DOM), which represents HTML and browser objects.