Update Docstring

Co-authored-by: Kyle Daruwalla <daruwalla.k.public@icloud.com>

src/losses/functions.jl

@@ -432,7 +432,9 @@ end
 
 Return the [focal_loss](https://arxiv.org/pdf/1708.02002.pdf)
 Extremely useful for classification when you have highly imbalanced classes. It down-weights
-well-classified examples and focuses on hard examples. Loss is much high for misclassified points as compared to well-classified points. Used in single-shot detectors.
+well-classified examples and focuses on hard examples.
+Loss is much high for misclassified points as compared to well-classified points.
+Used in single-shot detectors.
 """
 function focal_loss(ŷ, y; dims=1, agg=mean, 𝛄=2.0, eps = eps(eltype(ŷ)))
     ŷ = ŷ .+ eps