Added blank line to autodiff cookbook to trigger an enumeration

docs/notebooks/autodiff_cookbook.ipynb

@@ -1399,6 +1399,7 @@
    },
    "source": [
     "This convention covers three important cases:\n",
+    "\n",
     "1. If `f` evaluates a holomorphic function, then we get the usual complex derivative, since $\\partial_0 u = \\partial_1 v$ and $\\partial_1 u = - \\partial_0 v$.\n",
     "2. If `f` is evaluates the real-valued loss function of a complex parameter `x`, then we get a result that we can use in gradient-based optimization by taking steps in the direction of the conjugate of `grad(f)(x)`.\n",
     "3. If `f` evaluates a real-to-real function, but its implementation uses complex primitives internally (some of which must be non-holomorphic, e.g. FFTs used in convolutions) then we get the same result that an implementation that only used real primitives would have given.\n",