Remove FMT_*_DETAIL_NAMESPACE

include/fmt/chrono.h

@@ -530,7 +530,7 @@ inline std::tm gmtime(
   return gmtime(std::chrono::system_clock::to_time_t(time_point));
 }
 
-FMT_BEGIN_DETAIL_NAMESPACE
+namespace detail {
 
 // DEPRECATED!
 template <typename Char>
@@ -1997,7 +1997,7 @@ struct chrono_formatter {
   }
 };
 
-FMT_END_DETAIL_NAMESPACE
+}  // namespace detail
 
 #if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907
 using weekday = std::chrono::weekday;
@@ -2142,8 +2142,8 @@ struct formatter<std::chrono::time_point<std::chrono::system_clock, Duration>,
           epoch - std::chrono::duration_cast<std::chrono::seconds>(epoch));
 
       if (subsecs.count() < 0) {
-        auto second = std::chrono::duration_cast<Duration>(
-            std::chrono::seconds(1));
+        auto second =
+            std::chrono::duration_cast<Duration>(std::chrono::seconds(1));
         if (epoch.count() < ((Duration::min)() + second).count())
           FMT_THROW(format_error("duration is too small"));
         subsecs += second;