fix(docs): resolve Taylor expansion flakiness in Fermi-Hubbard FQE notebook (fixes #870)

Author: akushnarov

docs/fqe/tutorials/fermi_hubbard.ipynb

@@ -173,6 +173,7 @@
    },
    "outputs": [],
    "source": [
+    "np.random.seed(0)\n",
     "nele, sz = 2, 0\n",
     "init_wfn = fqe.Wavefunction([[nele, sz, nsites]])\n",
     "init_wfn.set_wfn(strategy=\"random\")"
@@ -196,7 +197,7 @@
    "outputs": [],
    "source": [
     "%%time\n",
-    "e_time = 0.9\n",
+    "e_time = 0.1\n",
     "true_evolved_fqe = init_wfn.time_evolve(e_time, hubbard)"
    ]
   },