[expos.only.entity] Say typedef-names are declared

Author: frederick-vs-ja

source/lib-intro.tex

@@ -528,8 +528,8 @@
 
 \pnum
 Several entities
-defined in \ref{\firstlibchapter} through \ref{\lastlibchapter} and \ref{depr}
-are only defined for the purpose of exposition.
+declared in \ref{\firstlibchapter} through \ref{\lastlibchapter} and \ref{depr}
+are only declared for the purpose of exposition.
 The declaration of such an entity
 is followed by a comment ending in \expos.