Fix typo in example code for injectComponent in Admin Panel API docs (#…

…2287)

* Fix outdated mention of Gold plan in SSO docs

* Fix typo in example code for injectComponent in Admin Panel API docs

* Fix unwanted commit from this PR

docusaurus/docs/dev-docs/plugins/admin-panel-api.md

@@ -447,7 +447,7 @@ Both the `injectComponent()` and `getPlugin('content-manager').injectComponent()
 
 export default {
   bootstrap(app) {
-    app.getPlugin('content-manager').injectComponent()('editView', 'informations', {
+    app.getPlugin('content-manager').injectComponent('editView', 'informations', {
       name: 'my-plugin-my-compo',
       Component: () => 'my-compo',
     });