added "r" to path

examples/SOLO_Statistics.ipynb

@@ -48,7 +48,7 @@
    "execution_count": null,
    "outputs": [],
    "source": [
-    "data_dir_path = \"<SOLO-DATASET-PATH>\"\n",
+    "data_dir_path = r\"<SOLO-DATASET-PATH>\"\n",
     "solo = Solo(data_dir_path)"
    ],
    "metadata": {