Fix release note syntax

Author: arcondello

releasenotes/notes/correlation-8eaf77b85eeed9ba.yaml

@@ -8,7 +8,7 @@ features:
     Add ``dwave.plugins.sklearn.utilities.corrcoef`` function. A drop-in replacement
     for ``numpy.corrcoef`` that is modified to avoid unnecessary memory usage when
     working with ``numpy.memmap`` arrays.
-    - |
+  - |
     Add ``dwave.plugins.sklearn.utilities.dot_2d`` function. A drop-in replacement
     for ``numpy.dot`` for 2d arrays that is modified to avoid unnecessary memory usage when
     working with ``numpy.memmap`` arrays.