update release notes

MalteKurz · MalteKurz · commit e0bfda0a6be9 · 2022-11-23T11:24:40.000+01:00
diff --git a/doc/release/release.rst b/doc/release/release.rst
@@ -180,6 +180,7 @@ Release notes
       `#173 <https://github.com/DoubleML/doubleml-for-r/pull/173>`_
       `#174 <https://github.com/DoubleML/doubleml-for-r/pull/174>`_
       `#177 <https://github.com/DoubleML/doubleml-for-r/pull/177>`_
+      `#178 <https://github.com/DoubleML/doubleml-for-r/pull/178>`_
 
 
     **DoubleML 0.5.1**
