fix some simple Doxygen warning

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@69684 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/doxygen/overviews/helloworld.h

@@ -15,7 +15,7 @@ for your own code. While it does nothing very useful, it introduces a couple of
 important concepts and explains how to write a working wxWidgets application.
 
 First, you have to include wxWidgets' header files, of course. This can
-be done on a file by file basis (such as @c wx/window.h</tt>) or using one
+be done on a file by file basis (such as @c wx/window.h) or using one
 global include (@c wx/wx.h) which includes most of the commonly needed headers
 (although not all of them as there are simply too many wxWidgets headers to
 pull in all of them). For the platforms with support for precompiled headers,

interface/wx/log.h

@@ -1293,7 +1293,7 @@ void wxVLogStatus(const char* formatString, va_list argPtr);
 /**
     Mostly used by wxWidgets itself, but might be handy for logging errors
     after system call (API function) failure. It logs the specified message
-    text as well as the last system error code (@e errno or @e ::GetLastError()
+    text as well as the last system error code (@e errno or @e GetLastError()
     depending on the platform) and the corresponding error message. The second
     form of this function takes the error code explicitly as the first
     argument.

interface/wx/treelist.h

@@ -888,5 +888,3 @@ public:
  */
 #define wxTreeListEventHandler(func) \
     wxEVENT_HANDLER_CAST(wxTreeListEventFunction, func)
-
-#endif // _WX_TREELIST_H_