Fix Turing MH sampler (#324)

TuringLang · Sep 24, 2022 · 3cd94dd · 3cd94dd
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diff --git a/tutorials/14-minituring/14_minituring.jmd b/tutorials/14-minituring/14_minituring.jmd
@@ -273,6 +273,7 @@ We compare these results with Turing.
 
 ```julia
 using Turing
+using PDMats
 
 @model function turing_m(x)
     a ~ Normal(0.5, 1)
@@ -281,7 +282,7 @@ using Turing
     return nothing
 end
 
-sample(turing_m(3.0), MH(:a => Normal(), :b => Normal()), 1_000_000)
+sample(turing_m(3.0), MH(ScalMat(2, 1.0)), 1_000_000)
 ```
 
 As you can see, with our simple probabilistic programming language and custom samplers we get similar results as Turing.