Missing end-tag in the documentation guide

[Christian Huegel]

Hi everyone,

i´ve  noticed a small error on the documentation guide (Chapter 6.29)
The line:
<xref linkend="ch-tutorial"><xref> and <xref 
linkend="s1-tutorial-parent"></xref>

should be:

<xref linkend="ch-tutorial"></xref> and <xref 
linkend="s1-tutorial-parent"></xref>

It´s a missing end-tag. Can you correct this?

Have a nice day

Christian