Update notebook sample with simplified datadir configuration

closes #7252

freqtrade/templates/strategy_analysis_example.ipynb

@@ -30,7 +30,7 @@
     "\n",
     "# Initialize empty configuration object\n",
     "config = Configuration.from_files([])\n",
-    "# Optionally, use existing configuration file\n",
+    "# Optionally (recommended), use existing configuration file\n",
     "# config = Configuration.from_files([\"config.json\"])\n",
     "\n",
     "# Define some constants\n",
@@ -38,7 +38,7 @@
     "# Name of the strategy class\n",
     "config[\"strategy\"] = \"SampleStrategy\"\n",
     "# Location of the data\n",
-    "data_location = Path(config['user_data_dir'], 'data', 'binance')\n",
+    "data_location = config['datadir']\n",
     "# Pair to analyze - Only use one pair here\n",
     "pair = \"BTC/USDT\""
    ]
@@ -365,7 +365,7 @@
  "metadata": {
   "file_extension": ".py",
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3.9.7 64-bit ('trade_397')",
    "language": "python",
    "name": "python3"
   },
@@ -379,7 +379,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.5"
+   "version": "3.9.7"
   },
   "mimetype": "text/x-python",
   "name": "python",
@@ -427,7 +427,12 @@
    ],
    "window_display": false
   },
-  "version": 3
+  "version": 3,
+  "vscode": {
+   "interpreter": {
+    "hash": "675f32a300d6d26767470181ad0b11dd4676bcce7ed1dd2ffe2fbc370c95fc7c"
+   }
+  }
  },
  "nbformat": 4,
  "nbformat_minor": 4