Chore: regenerate docs

Docs/Themes/hailhydrant.md

@@ -1,22 +1,23 @@
 [//]: # (WARNING: this file is automatically generated. Please find the sources at the bottom and edit those sources)
 
 ## Hydrants, Extinguishers, Fire stations, and Ambulance stations ( [hailhydrant](https://mapcomplete.org/hailhydrant) )
-On this map you can find and update hydrants, fire stations, ambulance stations, and extinguishers in your favorite neighborhoods.
+_This document details some technical information about this MapComplete theme, mostly about the attributes used in the theme. Various links point toward more information about the attributes, e.g. to the OpenStreetMap-wiki, to TagInfo or tools creating statistics_
+The theme introduction reads:
+
+> On this map you can find and update hydrants, fire stations, ambulance stations, and extinguishers in your favorite neighborhoods.
+
 This theme contains the following layers:
+
+
  - [hydrant](../Layers/hydrant.md)
  - [extinguisher](../Layers/extinguisher.md)
  - [fire_station](../Layers/fire_station.md)
  - [ambulancestation](../Layers/ambulancestation.md)
- - [selected_element](../Layers/selected_element.md)
- - [gps_location](../Layers/gps_location.md)
- - [gps_location_history](../Layers/gps_location_history.md)
- - [home_location](../Layers/home_location.md)
- - [gps_track](../Layers/gps_track.md)
- - [range](../Layers/range.md)
- - [last_click](../Layers/last_click.md)
- - [favourite](../Layers/favourite.md)
- - [summary](../Layers/summary.md)
+
+
 Available languages:
+
+
  - en
  - ja
  - zh_Hant
@@ -34,4 +35,8 @@ Available languages:
  - pl
 
 
+# Layers defined in this theme configuration file
+These layers can not be reused in different themes.
+
+
 This document is autogenerated from [assets/themes/hailhydrant/hailhydrant.json](https://github.com/pietervdvn/MapComplete/blob/develop/assets/themes/hailhydrant/hailhydrant.json)