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Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Author: encukou

Doc/glossary.rst

@@ -1494,7 +1494,7 @@ Glossary
       the ``3`` in ``items[3]``.
       Usually used to select an element of a container.
       Also called a :term:`key` when subscripting a :term:`mapping`,
-      or :term:`index` when subscripting a :term:`sequence`.
+      or an :term:`index` when subscripting a :term:`sequence`.
 
    synchronization primitive
       A basic building block for coordinating (synchronizing) the execution of

Doc/reference/datamodel.rst

@@ -326,7 +326,7 @@ to negative slice positions.
 Note that no error is raised if a slice position is less than zero or larger
 than the length of the sequence.
 
-If *start* is missing or ``None``, slicing behaves as if *start* was zero.
+If *start* is missing or :data:`None`, slicing behaves as if *start* was zero.
 If *stop* is missing or ``None``, slicing behaves as if *stop* was equal to
 the length of the sequence.