Add Microsoft Edge for MacOS to supported browsers (#29956)

The new Chromium-based Edge has been available as a beta for sometime and general availability of the final version is expected to ship from Jan 15. I think it makes sense to add it as a supported browser once it's out of beta.
REF: https://blogs.windows.com/windowsexperience/2019/11/04/introducing-the-new-microsoft-edge-and-bing/

site/docs/4.4/getting-started/browsers-devices.md

@@ -97,7 +97,7 @@ Similarly, the latest versions of most desktop browsers are supported.
       <td class="text-success">Supported</td>
       <td class="text-success">Supported</td>
       <td class="text-muted">N/A</td>
-      <td class="text-muted">N/A</td>
+      <td class="text-success">Supported</td>
       <td class="text-success">Supported</td>
       <td class="text-success">Supported</td>
     </tr>