Update rgbds(5) object file format documentation
@@ -225,6 +225,7 @@ with some bytes being special prefixes for integers and symbols.
.It Li $03 Ta Li / operator
.It Li $04 Ta Li % operator
.It Li $05 Ta Li unary -
+.It Li $06 Ta Li ** operator
.It Li $10 Ta Li | operator
.It Li $11 Ta Li & operator
.It Li $12 Ta Li ^ operator
