Fix code format

Author: MBkkt

libcxx/include/string

@@ -3418,7 +3418,8 @@ _LIBCPP_CONSTEXPR_SINCE_CXX20 void basic_string<_CharT, _Traits, _Allocator>::re
 template <class _CharT, class _Traits, class _Allocator>
 inline _LIBCPP_CONSTEXPR_SINCE_CXX20 void basic_string<_CharT, _Traits, _Allocator>::shrink_to_fit() _NOEXCEPT {
   size_type __target_capacity = size();
-  __target_capacity = __target_capacity < __min_cap ? static_cast<size_type>(__min_cap) - 1 : __recommend(__target_capacity);
+  __target_capacity =
+      __target_capacity < __min_cap ? static_cast<size_type>(__min_cap) - 1 : __recommend(__target_capacity);
   if (__target_capacity == capacity())
     return;