Update key_questions.rst
@@ -29,7 +29,7 @@ Are you selling books, DVDs, clothing, downloads, or fruit and vegetables? You
need to capture the attributes of your product types within your models. Oscar
divides products into 'product classes' which each have their own set of
attributes. Modelling the catalogue on the backend is explained in
-:doc:`/topics/modelling_your_catalogue`
+:doc:`/topics/modelling_your_catalogue`.
How is your catalogue organised?
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