docs(analysis): correct plot_results_spread() docstring

Author: amyheather

notebooks/analysis.ipynb

@@ -587,8 +587,8 @@
     "            Name of column to plot.\n",
     "        x_label (str):\n",
     "            X axis label.\n",
-    "        y_label (str):\n",
-    "            Y axis label.\n",
+    "        file (str):\n",
+    "            Filename to save figure to.\n",
     "    \"\"\"\n",
     "    fig = px.histogram(trial.trial_results_df[column])\n",
     "    fig.update_layout(\n",