it's replaced by it is, 'll by will

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7285 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/htparser.tex

@@ -103,7 +103,7 @@ This must be called after DoParsing().
 \constfunc{wxFileSystem*}{GetFS}{\void}
 
 Returns pointer to the file system. Because each tag handler has
-reference to it's parent parser it can easily request the file by
+reference to it is parent parser it can easily request the file by
 calling
 
 \begin{verbatim}