docs(dsp-tools-xmlupload): addition to incomplete paragraph (DSP-1693) (#67)

* docs(dsp-tools-xmlupload):  addition to incomplete paragraph about list-props, attribute "list" is required

* docs(dsp-tools-xmlupload): correct attribute name is 'id'

Author: jnussbaum

docs/dsp-tools-xmlupload.md

@@ -159,7 +159,7 @@ A complete `<resource>` element may look as follows:
 ```xml
 <resource label="EURUS015a"
           restype=":Postcard"
-          unique_id="238807"
+          id="238807"
           permissions="res-def-perm">
    ...
 </resource>
@@ -434,6 +434,7 @@ least one `<list>` element.
 Attributes:
 
 - `name`: name of the property as defined in the ontology (required)
+- `list`: name of the list as defined in the ontology (required)
 
 #### `<list>`
 The `<list>` element references a node in a (pull-down or hierarchical) list.