update: adjsut for new usage 2

Author: VsevolodX

other/materials_designer/specific_examples/defect_creation_island.ipynb

@@ -109,7 +109,7 @@
    "source": [
     "from mat3ra.made.material import Material\n",
     "from mat3ra.standata.materials import Materials\n",
-    "material = Material(Materials.get_by_name_first_match(\"TiN\")[0])"
+    "material = Material(Materials.get_by_name_first_match(\"TiN\"))"
    ],
    "metadata": {
     "collapsed": false