Fix item lists for rendering by Sphinx notebook extension.

PiperOrigin-RevId: 322212008

trax/layers/intro.ipynb

@@ -342,6 +342,7 @@
         "\n",
         "Many layer types have creation-time parameters for flexibility. The \n",
         "`Concatenate` layer type, for instance, has two optional parameters:\n",
+        "\n",
         "*   `axis`: index of axis along which to concatenate the tensors; default value of -1 means to use the last axis.\n",
         "*   `n_items`: number of tensors to join into one by concatenation; default value is 2.\n",
         "\n",
@@ -922,6 +923,7 @@
         "\n",
         "The Trax runtime supports the concept of multiple data streams, which gives\n",
         "individual layers flexibility to:\n",
+        "\n",
         "  - process a single data stream ($n_{in} = n_{out} = 1$),\n",
         "  - process multiple parallel data streams ($n_{in} = n_{out} = 2, 3, ... $),\n",
         "  - split or inject data streams ($n_{in} \u003c n_{out}$), or\n",
@@ -936,6 +938,7 @@
         "  )\n",
         "```\n",
         "In other words, layer by layer:\n",
+        "\n",
         "  - `Branch(shortcut, layers)`: makes two copies of the single incoming data stream, passes one copy via the shortcut (typically a no-op), and processes the other copy via the given layers, applied in series. [$n_{in} = 1$, $n_{out} = 2$]\n",
         "  - `Add()`: combines the two streams back into one by adding two tensors elementwise. [$n_{in} = 2$, $n_{out} = 1$]"
       ]