Chore: regenerate docs

Docs/SpecialInputElements.md

@@ -24,6 +24,9 @@
     + [phone](#phone)
     + [opening_hours](#opening_hours)
     + [color](#color)
+    + [image](#image)
+    + [simple_tag](#simple_tag)
+    + [key](#key)
 
 
 
@@ -257,6 +260,30 @@ postfix | Piece of text that will always be added to the end of the generated op
 
 
 
-Shows a color picker 
+Shows a color picker
+
+
+
+### image 
+
+
+
+Same as the URL-parameter, except that it checks that the URL ends with `.jpg`, `.png` or some other typical image format
+
+
+
+### simple_tag 
+
+
+
+A simple tag of the format `key=value` where `key` conforms to a normal key `
+
+
+
+### key 
+
+
+
+Validates a key, mostly that no weird characters are used 
 
 This document is autogenerated from [UI/InputElement/Validators.ts](https://github.com/pietervdvn/MapComplete/blob/develop/UI/InputElement/Validators.ts)