Document properties input for partials

Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>

layouts/partials/openapi/render-object-table.html

@@ -84,6 +84,9 @@
     * `oneOf`: optional array of dictionaries describing the different formats
       that the property can have
 
+    * `properties`: if the type is an object, optional dictionary for
+      well-defined properties, each given as: `property_name` : `property_data`
+
     * `additionalProperties`: if the type is an object, optional dictionary for
       properties with undefined names
 
@@ -148,6 +151,9 @@
 
     * `title`: optional string for the title of the object property
 
+    * `properties`: optional dictionary for well-defined properties, each given
+      as: `property_name` : `property_data`
+
     * `additionalProperties`: optional dictionary for properties with undefined
       names