Resolve "Add CheatSheet form on internal page"

Closes #63 (closed)

src/pages/antiseche.js

 import React from 'react';
 import Layout from "@theme/Layout"; 
 import Link from "@docusaurus/Link";
+// import injectHTMLTags from @docusaurus
 
 function GitAntiseche() {
   return (
+    <>
     <Layout title='=Mon antisèche Git' description='Page antisèche Git'>
     <div
           style={{
@@ -18,8 +20,24 @@ function GitAntiseche() {
         </p>
         <script id="form-script-tag-2235710" src="https://systeme.io/public/remote/page/3299399c01759e24377bd1ead360e1cda40992e.js"></script>
     </div>
-    </Layout>
+    </Layout>;
+    </>
   );
 };
 
-export default GitAntiseche;
\ No newline at end of file
+export default GitAntiseche;
+
+module.exports = function (context, options) {
+  return {
+    name: 'docusaurus-plugin',
+    loadContent: async () => {
+      return {remoteHeadTags: await fetchHeadTagsFromAPI()};
+    },
+    //content = plugin créée - lien avec config
+    injectHtmlTags({content}) {
+      return {
+        postBodyTags: [`<div> Ceci est le corps de l'article </div>`],
+      };
+    },
+  };
+};
\ No newline at end of file