revert unnecessary changes that complicate the diff

Author: penelopeysm

src/model.jl

@@ -865,7 +865,7 @@ end
 
 """
     init!!(
-        [rng::Random.AbstractRNG, ]
+        [rng::Random.AbstractRNG,]
         model::Model,
         varinfo::AbstractVarInfo,
         [init_strategy::AbstractInitStrategy=PriorInit()]
@@ -874,8 +874,9 @@ end
 Evaluate the `model` and replace the values of the model's random variables
 in the given `varinfo` with new values, using a specified initialisation strategy.
 If the values in `varinfo` are not set, they will be added.
-using a specified initialisation strategy. If `init_strategy` is not provided,
-defaults to PriorInit().
+using a specified initialisation strategy.
+
+If `init_strategy` is not provided, defaults to PriorInit().
 
 Returns a tuple of the model's return value, plus the updated `varinfo` object.
 """