Merge pull request #916 from kcormi/user_doc_statsforward

Remove stray _0

docs/what_combine_does/model_and_likelihood.md

@@ -5,7 +5,7 @@
 The observation model, $\mathcal{M}( \vec{\Phi})$ defines the probability for any set of observations given specific values of the input parameters of the model $\vec{\Phi}$.
 The probability for any observed data is denoted:
 
-$$ p_{\mathcal{M}}(\mathrm{data}; \vec{\Phi}_0 ) $$
+$$ p_{\mathcal{M}}(\mathrm{data}; \vec{\Phi} ) $$
 
 where the subscript $\mathcal{M}$ is given here to remind us that these are the probabilities according to this particular model (though usually we will omit it for brevity).