bug#30276: typos in the manual (api-macros, vm)

[Matt Wette]

A couple typos in the maual

--- api-macros.texi-fix 2018-01-28 13:22:52.305712852 -0800
+++ api-macros.texi     2017-11-19 11:22:01.000000000 -0800
@@ -1280,7 +1280,7 @@
 
 In this way @code{(macroexpand @var{foo})} is equivalent to
 @code{(macroexpand @var{foo} 'e '(eval))}.  The second argument is the
-mode (@code{'e} for ``eval'') and the third is the
+mode (@code{'e} for ``eval'') and the second is the
 eval-syntax-expanders-when parameter (only @code{eval} in this default
 setting).
 
--- vm.texi	2017-05-13 09:41:37.000000000 -0700
+++ vm.texi-fix 2018-01-28 13:21:31.621618026 -0800
@@ -719,7 +719,7 @@
 
 For calls, both in tail position and in non-tail position, we require
 that the procedure and the arguments already be shuffled into place
-befor the call instruction.  ``Into place'' for a tail call means that
+before the call instruction.  ``Into place'' for a tail call means that
 the procedure should be in slot 0, relative to the @code{fp}, and the
 arguments should follow.  For a non-tail call, if the procedure is in
 @code{fp}-relative slot @var{n}, the arguments should follow from slot