add only _config.yml to see if it breaks redirection

_config.yml

@@ -0,0 +1,53 @@
+repository: ethereum/go-ethereum
+
+theme: minima
+
+keep_files:
+  - static
+
+favicon: /static/images/favicon.png
+
+defaults:
+  - scope:
+      path: ""
+    values:
+      layout: sidebar
+  - scope:
+      path: "*"
+    values:
+      root: "."
+  - scope:
+      path: "*/*"
+    values:
+      root: ".."
+
+default_root: ".."
+
+collections_dir: docs
+collections:
+  install-and-build:
+    output: true
+    caption: Install and build
+    sidebar_index: 1
+  how-to:
+    output: true
+    caption: How to use
+    sidebar_index: 2
+  interface:
+    output: true
+    caption: Interface documentation
+    sidebar_index: 3
+  support:
+    output: true
+    caption: Issues and support
+    sidebar_index: 4
+  developers:
+    output: true
+    caption: Developers
+    sidebar_index: 5
+  doc:
+    output: true
+    caption: Other
+    sidebar_index: 6
+ 
+