Fix a typo in the recipe_pipeline! constructor (#54)

RecipesPipeline/src/RecipesPipeline.jl

@@ -53,9 +53,9 @@ include("recipes.jl")
     recipe_pipeline!(plt, plotattributes, args)
 
 Recursively apply user recipes, type recipes, plot recipes and series recipes to build a
-list of `Dict`s, each corresponding to a series. At the beginning `plotattributes`
-contains only the keyword arguments passed in by the user. Add all series to the plot
-bject `plt` and return it.
+list of `Dict`s, each corresponding to a series. At the beginning, `plotattributes`
+contains only the keyword arguments passed in by the user. Then, add all series to the plot
+object `plt` and return it.
 """
 function recipe_pipeline!(plt, plotattributes, args)
     plotattributes[:plot_object] = plt