Merge branch 'maint'

* maint:
  User's Manual: remove duplicated url at the end of Appendix B

Documentation/user-manual.txt

@@ -4572,4 +4572,3 @@ Alternates, clone -reference, etc.
 More on recovery from repository corruption.  See:
 	http://marc.theaimsgroup.com/?l=git&m=117263864820799&w=2
 	http://marc.theaimsgroup.com/?l=git&m=117147855503798&w=2
-	http://marc.theaimsgroup.com/?l=git&m=117147855503798&w=2