Fix argument list

Extra newline causes markdown to interpret them as two different lists.
Remove newline to keep it all as one list.

Author: abhro

src/data/datasets_synthetic.jl

@@ -172,7 +172,6 @@ membership to the smaller or larger circle, respectively.
 * `noise=0`: standard deviation of the Gaussian noise added to the data,
 
 * `factor=0.8`: ratio of the smaller radius over the larger one,
-
 $(EXTRA_KW_MAKE*EXTRA_CLASSIFICATION)
 
 ### Example