fix fmpe typo, add nle seed

Author: janfb

tutorials/16_implemented_methods.ipynb

@@ -187,7 +187,7 @@
     "from sbi.inference import FMPE\n",
     "\n",
     "inference = FMPE(prior)\n",
-    "# FMPE does support multiple rounds of inference\n",
+    "# FMPE does not support multiple rounds of inference\n",
     "theta = prior.sample((num_sims,))\n",
     "x = simulator(theta)\n",
     "inference.append_simulations(theta, x).train()\n",
@@ -251,6 +251,7 @@
    "source": [
     "from sbi.inference import NLE\n",
     "\n",
+    "torch.manual_seed(42)\n",
     "inference = NLE(prior)\n",
     "proposal = prior\n",
     "for _ in range(num_rounds):\n",