Remove unnecessary fmt/ prefix (#397)
diff --git a/include/fmt/printf.h b/include/fmt/printf.h
index c1a06b3..11d3aee 100644
--- a/include/fmt/printf.h
+++ b/include/fmt/printf.h
@@ -11,7 +11,7 @@
 #include <algorithm>  // std::fill_n
 #include <limits>     // std::numeric_limits
 
-#include "fmt/ostream.h"
+#include "ostream.h"
 
 namespace fmt {
 namespace internal {