Core: Add descriptions in formcode docs

TYPE: Feature
LINK: OGC-1942

src/onegov/form/parser/core.py

@@ -229,10 +229,12 @@
     I'm an float field of a different range = -100.00..100.00
 
 Integer fields optionally can have a price attached to them which will be
-multiplied by the supplied integer.
+multiplied by the supplied integer::
 
     Number of stamps to include = 0..30 (0.85 CHF)
 
+This will result in a price of 0.85 CHF per stamp.
+
 Code
 ~~~~
 
@@ -260,6 +262,13 @@
 that uploaded files have the mimetype they claim to have and it won't accept
 obviously dangerous uploads like binaries (unless you really want to).
 
+These file inputs allow only for one file to be uploaded. If you want to
+allow multiple files to be uploaded, use the following syntax::
+
+    I'm a multiple file upload field = *.* (multiple)
+
+This will allow the user to upload multiple files at once.
+
 Standard Numbers
 ~~~~~~~~~~~~~~~~