fix notebook

Author: anurudhp

qualtran/bloqs/bookkeeping/bookkeeping.ipynb

@@ -1135,7 +1135,7 @@
     "class BloqWithComputeUncomputePair(Bloq):\n",
     "    @property\n",
     "    def signature(self):\n",
-    "        return Signature.build(a=1, b=1)\n",
+    "        return Signature.build(a=1, b=1, q=1)\n",
     "\n",
     "    def build_composite_bloq(self, bb, a, b, q):\n",
     "        (a, b), c = bb.add(Always(And()), ctrl=[a, b])\n",