remove unneeded argument in docs source

1f794ede · Leon Merten Lohse · e7d5f206 · 1f794ede
Commit 1f794ede authored Apr 20, 2021 by Leon Merten Lohse
--- a/docs/source/zz_references.rst
+++ b/docs/source/zz_references.rst
 List of referenced articles
 ---------------------------

-.. bibliography:: ../../literature.bib
+.. bibliography::
   :style: plain