Fix typo and missing new header

Author: mborland

include/boost/decimal/decimal64_fast.hpp

@@ -19,6 +19,7 @@
 #include <boost/decimal/detail/ryu/ryu_generic_128.hpp>
 #include <boost/decimal/detail/promotion.hpp>
 #include <boost/decimal/detail/cmath/next.hpp>
+#include <boost/decimal/detail/components.hpp>
 
 #ifndef BOOST_DECIMAL_BUILD_MODULE
 

include/boost/decimal/detail/components.hpp

@@ -57,7 +57,7 @@ using decimal_fast32_t_components = impl::decimal_components<std::uint32_t, std:
 
 using decimal64_t_components = impl::decimal_components<std::uint64_t, std::int32_t>;
 
-using decimal64_fast64_t_components = impl::decimal_components<std::uint64_t, std::int32_t>;
+using decimal_fast64_t_components = impl::decimal_components<std::uint64_t, std::int32_t>;
 
 using decimal128_t_components = impl::decimal_components<boost::int128::uint128_t, std::int32_t>;