Update package.rst

Co-authored-by: Sébastien Hensgen <sebastienh@mirageoscience.com>

Author: domfournier

package.rst

@@ -56,4 +56,4 @@ The use of Third Party Software is governed by the terms of such software licens
 Third Party Software notices and/or additional terms and conditions are located in the
 `THIRD_PARTY_SOFTWARE.rst`_ file.
 
-.. _THIRD_PARTY_SOFTWARE.rst: .docs/source/THIRD_PARTY_SOFTWARE.rst
+.. _THIRD_PARTY_SOFTWARE.rst: docs/source/THIRD_PARTY_SOFTWARE.rst