many fixes in documentation so that it compiles with LaTeX - get rid of \end{document} troubles, \it{} -> {\it} and few more syntax fixes.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5109 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/htmlcell.tex

@@ -25,7 +25,7 @@ See \helpref{wxHtmlContainerCell}{wxhtmlcontainercell},
 % Bitmap is corrupt!
 This image shows you cells and containers:
 
-\image{}{contbox.bmp}
+\helponly{\image{}{contbox.bmp}}
 \end{comment}
 \wxheading{Using Containers in Tag Handler}
 
@@ -45,7 +45,7 @@ it returns "control" to the parent container.
 % Bitmap corrupt!
 See explanation:
 
-\image{}{cont.bmp}
+\helponly{\image{}{cont.bmp}}
 \end{comment}
 It's clear there must be same number of calls to 
 OpenContainer as to CloseContainer...
@@ -70,7 +70,7 @@ m_WParser -> OpenContainer();
 % Bitmap corrupt!
 and here is image of the situation:
 
-\image{}{hello.bmp}
+\helponly{\image{}{hello.bmp}}
 \end{comment}
 
 You can see that there was opened container before running the code. We closed