Merge pull request #548 from eduVcJy0UE0cy0zo3BS7XYO3b/patch-1

Fix `RETURNCALLREF` argument type

Author: rossberg

document/core/syntax/instructions.rst

@@ -764,7 +764,7 @@ Instructions in this group affect the flow of control.
      \CALLREF~\typeidx \\&&|&
      \CALLINDIRECT~\tableidx~\typeidx \\&&|&
      \RETURNCALL~\funcidx \\&&|&
-     \RETURNCALLREF~\funcidx \\&&|&
+     \RETURNCALLREF~\typeidx \\&&|&
      \RETURNCALLINDIRECT~\tableidx~\typeidx \\
    \end{array}