Update (very old) notebook for v2 installation

Author: mart-r

medcat-trainer/notebook_docs/Train_MedCAT_Models.ipynb

@@ -25,7 +25,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -177,7 +177,7 @@
    ],
    "source": [
     "# install medcat\n",
-    "!pip install medcat\n",
+    "!pip install \"medcat[spacy,meta-cat,rel-cat,deid]>=2.0.0\"\n",
     "# scispacy medium models\n",
     "!pip install https://s3-us-west-2.amazonaws.com/ai2-s2-scispacy/releases/v0.2.5/en_core_sci_md-0.2.5.tar.gz\n",
     "# ipywidgets\n",