[meta.unary.prop] itemize long sentence (#6436)

Author: Eisenwave

source/meta.tex

@@ -1344,11 +1344,13 @@
 \item \tcode{T} is trivially copyable, and
 \item any two objects of type \tcode{T} with the same value
 have the same object representation, where
-two objects of array or non-union class type are considered to have the same value
+\begin{itemize}
+\item two objects of array or non-union class type are considered to have the same value
 if their respective sequences of direct subobjects have the same values, and
-two objects of union type are considered to have the same value
+\item two objects of union type are considered to have the same value
 if they have the same active member and the corresponding members have the same value.
 \end{itemize}
+\end{itemize}
 The set of scalar types for which this condition holds is
 \impldef{which scalar types have unique object representations}.
 \begin{note}