[basic.compound] Fix cross-reference for 'incomplete type' (#6210)

Author: lprv

source/basic.tex

@@ -5265,7 +5265,7 @@
 Except for pointers to static members, text referring to ``pointers''
 does not apply to pointers to members. Pointers to incomplete types are
 allowed although there are restrictions on what can be done with
-them\iref{basic.align}.
+them\iref{basic.types.general}.
 \indextext{address}%
 Every value of pointer type is one of the following:
 \begin{itemize}