Improve documentation

Docs/Layers/ghost_bike.md

@@ -12,24 +12,9 @@ A layer showing memorials for cyclists, killed in road accidents
 
 
 
-## Table of contents
-
-1. [ghost_bike](#ghost_bike)
-      * [Themes using this layer](#themes-using-this-layer)
-  - [Basic tags for this layer](#basic-tags-for-this-layer)
-  - [Supported attributes](#supported-attributes)
-    + [ghost-bike-explanation](#ghost-bike-explanation)
-    + [images](#images)
-    + [ghost_bike-name](#ghost_bike-name)
-    + [ghost_bike-source](#ghost_bike-source)
-    + [ghost_bike-inscription](#ghost_bike-inscription)
-    + [ghost_bike-start_date](#ghost_bike-start_date)
-
-
-
-
 
 
+  - This layer is shown at zoomlevel **0** and higher
 
 
 
@@ -44,8 +29,6 @@ A layer showing memorials for cyclists, killed in road accidents
   - [personal](https://mapcomplete.osm.be/personal)
 
 
-[Go to the source code](https://github.com/pietervdvn/MapComplete/blob/develop/assets/layers/ghost_bike/ghost_bike.json)
-
 
 
  Basic tags for this layer