fixed wxTimeSpan::Format() to behave more reasonably

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9509 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/datetime.tex

@@ -145,7 +145,7 @@ values as parameter:
     };
 \end{verbatim}
 
-Differnet parst of the world use different conventions for the week start.
+Different parst of the world use different conventions for the week start.
 In some countries, the week starts on Sunday, while in others - on Monday.
 The ISO standard doesn't address this issue, so we support both conventions in
 the functions whose result depends on it (\helpref{GetWeekOfYear}{wxdatetimegetweekofyear} and 
@@ -174,8 +174,8 @@ No base class
 \wxheading{See also}
 
 \helpref{Date classes overview}{wxdatetimeoverview},\rtfsp
-wxTimeSpan,\rtfsp
-wxDateSpan,\rtfsp
+\helpref{wxTimeSpan}{wxtimespan},\rtfsp
+\helpref{wxDateSpan}{wxdatespan},\rtfsp
 \helpref{wxCalendarCtrl}{wxcalendarctrl}
 
 \latexignore{\rtfignore{\wxheading{Function groups}}}