removing an error

Author: mmcky

lectures/markov_chains_I.md

@@ -889,7 +889,7 @@ HTML(anim.to_jshtml())
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-\update_markov_chain_I
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 * $P$ is the stochastic matrix for recession and growth considered in {ref}`Example 1: Economic states <mc_eg2>`.
 * The highest red dot is an arbitrarily chosen initial marginal probability distribution  $\psi_0$, represented as a vector in $\mathbb R^3$.
 * The other red dots are the marginal distributions $\psi_0 P^t$ for $t = 1, 2, \ldots$.