docs: update documentation of stackexchange component (#18486)

**Description:** Update documentation of the StackExchange component
**Issue:** None
**Dependencies:** None

docs/docs/integrations/tools/stackexchange.ipynb

@@ -6,29 +6,19 @@
    "source": [
     "# StackExchange\n",
     "\n",
-    "This notebook goes over how to use the stack exchange component.\n",
+    ">[Stack Exchange](https://stackexchange.com/) is a network of question-and-answer (Q&A) websites on topics in diverse fields, each site covering a specific topic, where questions, answers, and users are subject to a reputation award process. The reputation system allows the sites to be self-moderating.\n",
     "\n",
-    "All you need to do is install stackapi:\n",
-    "1. pip install stackapi\n",
-    "\n"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "pip install stackapi"
+    "The ``StackExchange`` component integrates the StackExchange API into LangChain allowing access to the [StackOverflow](https://stackoverflow.com/) site of the Stack Excchange network. Stack Overflow focuses on computer programming.\n",
+    "\n",
+    "\n",
+    "This notebook goes over how to use the ``StackExchange`` component."
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {},
-   "outputs": [],
    "source": [
-    "from langchain_community.utilities import StackExchangeAPIWrapper"
+    "We first have to install the python package stackapi which implements the Stack Exchange API."
    ]
   },
   {
@@ -37,7 +27,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "stackexchange = StackExchangeAPIWrapper()"
+    "pip install --upgrade stackapi"
    ]
   },
   {
@@ -46,13 +36,17 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "from langchain_community.utilities import StackExchangeAPIWrapper\n",
+    "\n",
+    "stackexchange = StackExchangeAPIWrapper()\n",
+    "\n",
     "stackexchange.run(\"zsh: command not found: python\")"
    ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -66,7 +60,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.8"
+   "version": "3.9.6"
   }
  },
  "nbformat": 4,