Some doc proofreading

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6718 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/datstrm.tex

@@ -17,6 +17,7 @@ is defined as signed int on 32-bit architectures) so that you cannot use long. T
 problems (here and elsewhere), make use of the wxInt32, wxUint32, etc types.
 
 For example:
+
 \begin{verbatim}
   wxFileInputStream input( "mytext.dat" );
   wxDataInputStream store( input );