message: Update data_vs_metadata.rst
  fix typo
diff: Data vs. Metadata Concepts
  ===========================
  -This section describes includes examples that illustrate some common Sidre
  +This section includes examples that illustrate some common Sidre
  usage patterns involving buffers, groups, and views. In particular, it shows
  how data associated with a view is related to a buffer, how the lifetimes
  of data associated with a view and the buffer owning the data are related,
  