Add link to github examples in nav

Author: Timkarx

docusaurus.config.ts

@@ -80,6 +80,11 @@ const config: Config = {
           label: "Playground",
           position: "right",
         },
+        {
+          href: "https://github.com/boa-dev/boa/tree/main/examples",
+          label: "Examples",
+          position: "right",
+        },
         {
           href: "/conformance",
           label: "Conformance",