Fix a documentation typo.

docs/user-guide/expression-tasks.ipynb

@@ -260,7 +260,9 @@
   },
   {
    "cell_type": "raw",
-   "metadata": {},
+   "metadata": {
+    "raw_mimetype": "text/restructuredtext"
+   },
    "source": [
     "Note that the expression has access to the same `inputs` argument as any task - in fact, it has access to the same arguments as every task function, including `graph`, `name`, `inputs`, and - for :ref:`streaming <streaming-graphs>` graphs - `extent`.  Here's an expression that converts its input into a nicely formatted string, using both `name` and `inputs`:"
    ]
@@ -766,7 +768,7 @@
  "metadata": {
   "celltoolbar": "Raw Cell Format",
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -780,7 +782,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.2"
+   "version": "3.10.8"
   }
  },
  "nbformat": 4,