https://issues.dlang.org/show_bug.cgi?id=12626

          Issue ID: 12626
           Summary: cppstrings.html and cppcontracts.html have gone
                    missing from the website
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: websites
          Assignee: nobody@puremagic.com
          Reporter: andrej.mitrovich@gmail.com

Not sure about cppstrings.html, but I think the reason cppcontracts.html is missing is because Posix.mak wasn't updated properly in this pull:

https://github.com/D-Programming-Language/dlang.org/pull/534#issuecomment-41104842

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