Fix typo

docs/basics-of-parameter-estimation.txt

@@ -6,7 +6,7 @@ In this example, we'll go into some of the basics of parameter estimation and
 how they are implemented in :code:`bilby`.
 
 Firstly, consider a situation where you have discrete data :math:`\{y_0,
-y_1,\ldots, y_n\}` taken at a set of times :math:`\{t_0, t_1, \ldots, y_n\}`.
+y_1,\ldots, y_n\}` taken at a set of times :math:`\{t_0, t_1, \ldots, t_n\}`.
 Further, we know that this data is generated by a process which can be modelled
 by a linear function of the form :math:`y(t) = m t + c`. We will refer to
 this model as :math:`H`. Given a set of data,