[vector.data],[array.members] Clarify boolean condition (#6526)

Author: Eisenwave

source/containers.tex

@@ -6331,7 +6331,7 @@
 \pnum
 \returns
 A pointer such that \range{data()}{data() + size()} is a valid range. For a
-non-empty array, \tcode{data()} \tcode{==} \tcode{addressof(front())}.
+non-empty array, \tcode{data() == addressof(front())} is \keyword{true}.
 \end{itemdescr}
 
 \indexlibrarymember{array}{fill}%
@@ -9068,7 +9068,7 @@
 \pnum
 \returns
 A pointer such that \range{data()}{data() + size()} is a valid range. For a
-non-empty vector, \tcode{data()} \tcode{==} \tcode{addressof(front())}.
+non-empty vector, \tcode{data() == addressof(front())} is \keyword{true}.
 
 \pnum
 \complexity