Add a link to Axios ecosystem (#312)

This adds a separate link to the ecosystem instead of being buried in Notes

Author: mrlubos

en.lang.js

@@ -121,6 +121,11 @@ module.exports = {
       type: "heading",
       text: "Other",
     },
+    {
+      type: "link",
+      href: "https://github.com/axios/axios/blob/v1.x/ECOSYSTEM.md",
+      text: "Ecosystem",
+    },
     {
       type: "link",
       href: "/docs/notes",