[vector.modifiers] Old concepts cannot be “modeled” (#7836)

Author: xmcgcg

source/containers.tex

@@ -10082,7 +10082,8 @@
 \tcode{first}
 and
 \tcode{last})
-and no reallocations if iterators \tcode{first} and \tcode{last} are of forward, bidirectional, or random access categories.
+and no reallocations if
+\tcode{InputIterator} meets the \oldconcept{ForwardIterator} requirements.
 It makes order
 $N$
 calls to the copy constructor of
@@ -10385,7 +10386,7 @@
 \end{itemize}
 For the declarations taking a pair of \tcode{InputIterator},
 performs at most one reallocation if
-\tcode{InputItera\-tor} models \oldconcept{ForwardIterator}.
+\tcode{InputItera\-tor} meets the \oldconcept{ForwardIterator} requirements.
 \end{itemdescr}
 
 \indexlibrarymember{erase}{vector}%