From Jannik Heller, typo fixes

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14826 16af8721-9629-0410-8352-f15c8da7e697

include/osgWidget/PdfReader

@@ -118,7 +118,7 @@ class PdfImage : public osg::Image
 };
 
 
-/** Convinience class that provides a interactive quad that can be placed directly in the scene.*/
+/** Convenience class that provides a interactive quad that can be placed directly in the scene.*/
 class OSGWIDGET_EXPORT PdfReader : public osg::Geode
 {
     public:

include/osgWidget/VncClient

@@ -38,7 +38,7 @@ class VncImage : public osg::Image
 };
 
 
-/** Convinience Vnc Client class that provides a interactive quad that can be placed directly in the scene.*/
+/** Convenience Vnc Client class that provides a interactive quad that can be placed directly in the scene.*/
 class OSGWIDGET_EXPORT VncClient : public osg::Geode
 {
     public:

include/osgWidget/Window

@@ -643,10 +643,10 @@ class OSGWIDGET_EXPORT Window:
 
         // These are made into implementation functions since getting the width or height
         // of a window can potentially be an expensive operation, and we'll want to cache
-        // results if possible (which is handled transparently by the actualy Window::resize
+        // results if possible (which is handled transparently by the actual Window::resize
         // method). They return a Sizes struct which contains two members: cur (for current)
         // and min (minimum). It's important that the Window know it's minimum possible
-        // size so that it can ignore invaled requests to resize.
+        // size so that it can ignore invalid requests to resize.
         //
         // Default versions using BoundingBox calculations are provided, but some Windows
         // override this (Table, Box).