[optional.optional.ref.general] Use "object of type optional<T&>" correctly

Author: eisenwave

source/utilities.tex

@@ -4517,10 +4517,10 @@
 \end{codeblock}
 
 \pnum
-An object of \tcode{optional<T\&>}
+An object of type \tcode{optional<T\&>}
 \defnx{contains a value}{contains a value!\idxcode{optional.ref}}
 if and only if \tcode{\exposidnc{val} != nullptr} is \tcode{true}.
-When an \tcode{optional<T\&>} contains a value,
+When object of type \tcode{optional<T\&>} contains a value,
 the \defnx{contained value}{contained value!\idxcode{optional.ref}}
 is a reference to \tcode{*\exposid{val}}.