Update test/compiler.jl

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: mosesmakola

test/compiler.jl

@@ -501,7 +501,7 @@ module Issue537 end
         @model function demo(y)
             α ~ Uniform()
             μ ~ Normal()
-            σ ~ truncated(Normal(), lower=0)
+            σ ~ truncated(Normal(); lower=0)
             num_steps = length(y[1])
             num_obs = length(y)
             @inbounds for i in 1:num_obs