Generate docs with filter explanations

Docs/Layers/public_bookcase.md

@@ -171,7 +171,7 @@ The question is  Is this public bookcase freely accessible?
   - Only accessible to customers  corresponds with  `<a href='https://wiki.openstreetmap.org/wiki/Key:access' target='_blank'>access</a>=<a href='https://wiki.openstreetmap.org/wiki/Tag:access%3Dcustomers' target='_blank'>customers</a>`
 
 
-Only visible if  `indoor=yes`  is shown
+This tagrendering is only visible in the popup if the following condition is met: `indoor=yes`
 
 
 
@@ -226,7 +226,7 @@ This is rendered with  The reference number of this public bookcase within {bran
   - This bookcase is not part of a bigger network  corresponds with  `<a href='https://wiki.openstreetmap.org/wiki/Key:nobrand' target='_blank'>nobrand</a>=<a href='https://wiki.openstreetmap.org/wiki/Tag:nobrand%3Dyes' target='_blank'>yes</a>`
 
 
-Only visible if  `brand~.+`  is shown
+This tagrendering is only visible in the popup if the following condition is met: `brand~.+`
 
 
 
@@ -254,6 +254,35 @@ This rendering asks information about the property  [website](https://wiki.opens
 
 This is rendered with  More info on <a href='{website}' target='_blank'>the website</a>
 
+
+
+
+
+#### Filters 
+
+
+
+
+
+id | question | osmTags
+---- | ---------- | ---------
+kid-books.0 | Kinderboeken aanwezig? | books~^(.*children.*)$
+
+
+
+
+id | question | osmTags
+---- | ---------- | ---------
+adult-books.0 | Boeken voor volwassenen aanwezig? | books~^(.*adults.*)$
+
+
+
+
+id | question | osmTags
+---- | ---------- | ---------
+inside.0 | Indoor or outdoor (default) | 
+inside.1 | Binnen? | indoor=yes
+inside.2 | Buiten? | indoor=no\|
  
 
 This document is autogenerated from [assets/layers/public_bookcase/public_bookcase.json](https://github.com/pietervdvn/MapComplete/blob/develop/assets/layers/public_bookcase/public_bookcase.json)