Fix doc

Author: mitchblank

README.md

@@ -26,7 +26,7 @@ COMPATIBILITY
 
 This library is compatible with C++98, but if you give compile it with C++11 or later, this library uses `std::move()` instead of value copy and thus you can sort move-only types (see [#9](https://github.com/gfx/cpp-TimSort/pull/9) for details).
 
-You can disable use of `std::move()` by passing the macro '-DDISABLE_STD_MOVE'.
+You can disable use of `std::move()` by passing the macro '-DGFX_TIMSORT_USE_CXX11=0'
 
 SEE ALSO
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