[valarray.access] 'evaluates as' -> 'evaluates to'. (#1337)

Author: Eelis

source/numerics.tex

@@ -7010,7 +7010,7 @@
 A reference to the corresponding element of the array.
 \begin{note}
 The expression \tcode{(a[i] = q, a[i]) == q}
-evaluates as \tcode{true} for any non-constant \tcode{valarray<T> a},
+evaluates to \tcode{true} for any non-constant \tcode{valarray<T> a},
 any \tcode{T q}, and for any \tcode{size_t i}
 such that the value of \tcode{i} is less than the length of \tcode{a}.
 \end{note}