[pre-commit.ci] auto fixes from pre-commit.com hooks

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docs/gallery/plot_external_resources.py

@@ -312,7 +312,7 @@ def __init__(self, **kwargs):
 # ------------------------------------------------------
 # :py:class:`~hdmf.common.resources.HERD` has multiple ways for users to add
 # external references. The :py:func:`~hdmf.common.resources.HERD.add_ref_termset`
-# method allows users to not only validate terms, i.e., keys, but also 
+# method allows users to not only validate terms, i.e., keys, but also
 # add references for entire datasets, lists, arrays, etc.
 
 # The :py:func:`~hdmf.common.resources.HERD.add_ref_container` method is directly