fix typo

Author: Martin Schubert

docs/notebooks/basics.ipynb

@@ -107,7 +107,7 @@
     "\n",
     "Permittivity arrays must be at least two-dimensional, with the two trailing axes corresponding to the $u$ and $v$ directions ($x$ and $y$ in this case). In the case of uniform layers (i.e. layers in which the permittivity does not vary spatially), it is best for the trailing axes to have shape `(1, 1)`. This triggers a special code path which computes layer eigenmodes analytically, which is more efficient and generally more accurate.\n",
     "\n",
-    "Here, we'll model a rectangular pillar comprised of $n=1.85$ media on a $n=1.45$ substrate."
+    "Here, we'll model a rectangular pillar comprised of $n=1.45$ media on a $n=1.45$ substrate."
    ]
   },
   {
@@ -356,7 +356,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "invrs-cpu",
+   "display_name": "invrs",
    "language": "python",
    "name": "python3"
   },