Fix missing imports

developers/transforms/bijectors/index.qmd

@@ -20,6 +20,8 @@ import Random
 Random.seed!(468);
 
 using Distributions: Normal, LogNormal, logpdf
+using Statistics: mean, var
+using Plots: histogram
 ```
 
 A _bijection_ between two sets ([Wikipedia](https://en.wikipedia.org/wiki/Bijection)) is, essentially, a one-to-one mapping between the elements of these sets.

developers/transforms/distributions/index.qmd

@@ -21,7 +21,7 @@ It assumes:
 import Random
 Random.seed!(468);
 
-using Distributions: Normal, LogNormal, logpdf
+using Distributions: Normal, LogNormal, logpdf, Distributions
 using Plots: histogram
 ```
 

developers/transforms/dynamicppl/index.qmd

@@ -17,6 +17,9 @@ In the final part of this chapter, we'll discuss the higher-level implications o
 ```{julia}
 import Random
 Random.seed!(468);
+
+# Turing re-exports the entirety of Distributions
+using Turing
 ```
 
 When we are performing Bayesian inference, we're trying to sample from a joint probability distribution, which isn't usually a single, well-defined distribution like in the rather simplified example above.
@@ -134,7 +137,6 @@ We can observe this by inserting print statements into the model.
 Here, `__varinfo__` is the internal symbol for the `VarInfo` object used in model evaluation:
 
 ```{julia}
-using Turing
 setprogress!(false)
 
 @model function demo2()