minor bug in arc-handbook

doc/handbook/acheck.texi

@@ -244,6 +244,8 @@ This is the restriction of @var{any_trans} to @var{valid_state_assignments}.
 
 @subsection Operators
 
+@table @command
+
 @item assert(@cmdarg{S})
 
 @cmdarg{S} denotes a set of assignments of variables that are not necessarily
@@ -255,8 +257,6 @@ because computed configurations can be unreachables.
 
 @b{Encoding:} @TS{}, @DD{}
 
-@table @command
-
 @item @cmdarg{X@ind{1}} and @cmdarg{X@ind{2}}
 @itemx @cmdarg{X@ind{1}} & @cmdarg{X@ind{2}}
 Computes the intersection of the two sets @cmdarg{X@ind{1}} and