Update two_qubit_vqe_modified.ipynb

Author: mhjensen

doc/pub/week6/ipynb/two_qubit_vqe_modified.ipynb

@@ -277,7 +277,7 @@
     "    U2 = kron(U2_q0, U2_q1)\n",
     "    \n",
     "    # Full circuit\n",
-    "    U = U2 @ U_cnot @ U1\n",
+    "    U = U2@ U_cnot @ U1\n",
     "    \n",
     "    return U\n",
     "\n",