[rand.eng.philox] $M_k$ and $C_k$ are individual array elements, not an entire sequence

Author: tkoeppe

source/numerics.tex

@@ -3176,12 +3176,10 @@
   unless the \tcode{seed} function is called,
 
   \item
-  %FIXME: Where did "multipliers" come from?
-  $M_k$ are \tcode{multipliers}, and
+  $M_k$ is \tcode{multipliers[$k$]}, and
 
   \item
-  %FIXME: Where did "round_consts" come from?
-  $C_k$ are \tcode{round_consts}.
+  $C_k$ is \tcode{round_consts[$k$]}.
   \end{itemize}
 \end{itemize}