[expr.const] Bring pointer terminology up to date

Author: lprv

source/expressions.tex

@@ -7773,10 +7773,10 @@
   it does not have an indeterminate value\iref{basic.indet},
 
   \item
-  if the value is of pointer type, it contains
-  the address of an object with static storage duration,
-  the address past the end of such an object\iref{expr.add},
-  the address of a non-immediate function,
+  if the value is of pointer type, it is
+  a pointer to an object with static storage duration,
+  a pointer past the end of such an object\iref{expr.add},
+  a pointer to a non-immediate function,
   or a null pointer value,
 
   \item