knowledge_base: add missing cudnn key

duncanmmacleod · web-flow · commit beea537914b7 · 2021-01-22T16:03:24.000Z
in YAML block describing `conda_build_config.yaml` for CentOS 7
diff --git a/src/maintainer/knowledge_base.rst b/src/maintainer/knowledge_base.rst
@@ -1113,6 +1113,8 @@ of your recipe and rerendering.
 
 .. code-block:: yaml
 
+   cudnn:                                    # [linux64]
+     - undefined                             # [linux64]
    cuda_compiler_version:                    # [linux64]
      - None                                  # [linux64]
    docker_image:                             # [linux64]
