From Albert Luaces, typo fixes.

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14883 16af8721-9629-0410-8352-f15c8da7e697

src/osgShadow/ShadowMap.cpp

@@ -296,7 +296,7 @@ void ShadowMap::init()
             //       not yet supported !
 
             osg::Image* image = new osg::Image;
-            // allocate the image data, noPixels x 1 x 1 with 4 rgba floats - equivilant to a Vec4!
+            // allocate the image data, noPixels x 1 x 1 with 4 rgba floats - equivalent to a Vec4!
             int noPixels = 1;
             image->allocateImage(noPixels,1,1,GL_RGBA,GL_FLOAT);
             image->setInternalTextureFormat(GL_RGBA);
@@ -337,7 +337,7 @@ void ShadowMap::cull(osgUtil::CullVisitor& cv)
 
     osgUtil::RenderStage* orig_rs = cv.getRenderStage();
 
-    // do traversal of shadow recieving scene which does need to be decorated by the shadow map
+    // do traversal of shadow receiving scene which does need to be decorated by the shadow map
     {
         cv.pushStateSet(_stateset.get());