📖 docs: integrations/agent_toolkits (#9333)

Note: There are no changes in the file names!

- The group name on the main navbar changed: `Agent toolkits` -> `Agents
& Toolkits`. Examples here are the mix of the Agent and Toolkit examples
because Agents and Toolkits in examples are always used together.
- Titles changed: removed "Agent" and "Toolkit" suffixes. The reason is
the same.
- Formatting: mostly cleaning the header structure, so it could be
better on the right-side navbar.

Main navbar is looking much cleaner now.

docs/extras/integrations/toolkits/python.ipynb

@@ -5,9 +5,9 @@
    "id": "82a4c2cc-20ea-4b20-a565-63e905dee8ff",
    "metadata": {},
    "source": [
-    "# Python Agent\n",
+    "# Python\n",
     "\n",
-    "This notebook showcases an agent designed to write and execute python code to answer a question."
+    "This notebook showcases an agent designed to write and execute `Python` code to answer a question."
    ]
   },
   {
@@ -32,7 +32,7 @@
    "id": "ca30d64c",
    "metadata": {},
    "source": [
-    "## Using ZERO_SHOT_REACT_DESCRIPTION\n",
+    "## Using `ZERO_SHOT_REACT_DESCRIPTION`\n",
     "\n",
     "This shows how to initialize the agent using the ZERO_SHOT_REACT_DESCRIPTION agent type."
    ]
@@ -149,9 +149,7 @@
    "cell_type": "code",
    "execution_count": 5,
    "id": "4b9f60e7-eb6a-4f14-8604-498d863d4482",
-   "metadata": {
-    "scrolled": false
-   },
+   "metadata": {},
    "outputs": [
     {
      "name": "stdout",
@@ -271,7 +269,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.3"
+   "version": "3.10.12"
   }
  },
  "nbformat": 4,