Updated Upgrading to Spring Framework 3.x (markdown)

Upgrading-to-Spring-Framework-3.x.md

@@ -2,8 +2,8 @@ Note that the 3.0.x and 3.1.x lines have been retired already, with no support w
 
 Please consider upgrading to a more recent version.
 
-## Migrating to Spring Framework 3.2
+## Upgrading to Version 3.2
 The migration guide for upgrading to Spring 3.2 is available as [Appendix D in the Spring 3.2 reference documentation](http://docs.spring.io/spring-framework/docs/3.2.x/spring-framework-reference/htmlsingle/#migration-3.2).
 
-## Migrating to Spring Framework 3.1
+## Upgrading to Version 3.1
 The migration guide for upgrading to Spring 3.1 is available as [Appendix C in the Spring 3.2 reference documentation](http://docs.spring.io/spring-framework/docs/3.2.x/spring-framework-reference/htmlsingle/#migration-3.1).