Docusaurus-ify 1.20 (#26052)

See https://github.com/go-gitea/gitea/pull/26051

---------

Signed-off-by: jolheiser <john.olheiser@gmail.com>
Co-authored-by: JonRB <4564448+eeyrjmr@users.noreply.github.com>

docs/content/help.en-us.md

@@ -0,0 +1,13 @@
+---
+date: "2017-01-20T15:00:00+08:00"
+title: "Help"
+slug: "help"
+sidebar_position: 5
+toc: false
+draft: false
+menu:
+  sidebar:
+    name: "Help"
+    sidebar_position: 100
+    identifier: "help"
+---