add: SBM as network for membership vector

Author: BeaMarton13

doc/source/community_detection_guide/notebooks/functions.ipynb

@@ -604,7 +604,7 @@
     "        target=ax,\n",
     "        vertex_color=[colors_map(c) for c in communities.membership],\n",
     "        vertex_label=g.vs.indices,\n",
-    "        layout=g.layout_kamada_kawai(),\n",
+    "        layout=g.layout_auto(),\n",
     "    )\n",
     "    \n",
     "    # Corrected section for creating the legend\n",