Add a pair of parentheses as delimiter
@@ -174,7 +174,7 @@ compiler knows how to expand them properly:
2. Each repetition in the transcriber must contain at least one metavariable to
decide how many times to expand it. If multiple metavariables appear in the
same repetition, they must be bound to the same number of fragments. For
- instance, `( $( $i:ident ),* ; $( $j:ident ),* ) => ( $( ($i,$j) ),* )` must
+ instance, `( $( $i:ident ),* ; $( $j:ident ),* ) => (( $( ($i,$j) ),* ))` must
bind the same number of `$i` fragments as `$j` fragments. This means that
invoking the macro with `(a, b, c; d, e, f)` is legal and expands to
`((a,d), (b,e), (c,f))`, but `(a, b, c; d, e)` is illegal because it does
