Small grammar fix.
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst
index a2a9c19..a26fe75 100644
--- a/Doc/whatsnew/3.3.rst
+++ b/Doc/whatsnew/3.3.rst
@@ -136,10 +136,10 @@
 * Stub
 
 
-Unsupported operating systems
+Unsupported Operating Systems
 =============================
 
-OS/2 and VMS are no more supported because of the lack of maintainer.
+OS/2 and VMS are no more supported because of the lack of a maintainer.
 
 
 Porting to Python 3.3