Fix typo

src/likelihoods/gaussian.jl

@@ -42,7 +42,7 @@ function expected_loglikelihood(
 end
 
 function _gaussian_exp_loglikelihood_kernel(σ², q_f, y)
-    return -0.5 * (log(2π) + log.(σ²) + ((y - mean(q_f))^ 2 + var(q_f)) / σ²)
+    return -0.5 * (log(2π) + log(σ²) + ((y - mean(q_f))^2 + var(q_f)) / σ²)
 end
 
 default_expectation_method(::GaussianLikelihood) = AnalyticExpectation()