Error in the DOCTYPE in the example

[gioele]

The example manifest.xml described in README.md contains a wrong DOCTYPE:

<!DOCTYPE sheet PUBLIC "DarManifest 0.1.0" "http://darformat.org/DarManifest-0.1.0.dtd">
<dar>
[…]

The XML spec state

Validity constraint: Root Element Type

The Name in the document type declaration MUST match the element type of the root element.

In the example the DOCTYPE should be

<!DOCTYPE dar PUBLIC […]