[libc++][NFC] Format <string>

Author: ldionne

libcxx/include/string

@@ -3374,7 +3374,7 @@ template <class _CharT, class _Traits, class _Allocator>
 inline _LIBCPP_CONSTEXPR_SINCE_CXX20 void
 basic_string<_CharT, _Traits, _Allocator>::__shrink_or_extend(size_type __target_capacity) {
   __annotate_delete();
-  auto __guard = std::__make_scope_guard(__annotate_new_size(*this));
+  auto __guard    = std::__make_scope_guard(__annotate_new_size(*this));
   size_type __cap = capacity();
   size_type __sz  = size();