[meta.reflection.queries] Add missing words "function or".

Those were accidentally omitted in the application of P3096R12.

Author: tkoeppe

source/meta.tex

@@ -4564,7 +4564,7 @@
 \begin{itemdescr}
 \pnum
 \returns
-\tcode{true} if \tcode{r} represents a function type
+\tcode{true} if \tcode{r} represents a function or function type
 that has an ellipsis in its parameter-type-list\iref{dcl.fct}.
 Otherwise, \tcode{false}.
 \end{itemdescr}