Actually add documentation

Docs/Layers/split_point.md

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+
+ split_point 
+=============
+
+
+
+<img src='https://mapcomplete.osm.be/./assets/svg/scissors.svg' height="100px"> 
+
+Layer rendering the little scissors for the minimap in the 'splitRoadWizard'
+
+
+
+
+## Table of contents
+
+1. [split_point](#split_point)
+  - [Basic tags for this layer](#basic-tags-for-this-layer)
+  - [Supported attributes](#supported-attributes)
+
+
+
+
+
+
+
+
+[Go to the source code](../assets/layers/split_point/split_point.json)
+
+
+
+ Basic tags for this layer 
+---------------------------
+
+
+
+Elements must have the all of following tags to be shown on this layer:
+
+
+
+  - <a href='https://wiki.openstreetmap.org/wiki/Key:_split_point' target='_blank'>_split_point</a>=<a href='https://wiki.openstreetmap.org/wiki/Tag:_split_point%3Dyes' target='_blank'>yes</a>
+
+
+
+
+ Supported attributes 
+----------------------
+
+ 
+
+This document is autogenerated from assets/layers/split_point/split_point.json