Fix typo

massage→message

Author: Ikko Ashimine

docs/mfc/codesnippet/CPP/cpaintdc-class_2.cpp

@@ -1,5 +1,5 @@
 // Get a dc for a CWnd object pointer.
 CPaintDC dc(pWnd);
 
-// Send my private massage.
-::SendMessage(pWnd->m_hWnd, WM_MYMESSAGE, (LPARAM)& dc.m_ps, 0);
+// Send my private message.
+::SendMessage(pWnd->m_hWnd, WM_MYMESSAGE, (LPARAM)& dc.m_ps, 0);