Format .jl files [skip ci] (#4042)

Co-authored-by: t-bltg <t-bltg@users.noreply.github.com>

test/test_defaults.jl

@@ -13,7 +13,7 @@ empty!(PLOTS_DEFAULTS)
 Plots.__init__()
 
 @testset "default" begin
-    default(fillrange=0)
+    default(fillrange = 0)
     @test Plots._series_defaults[:fillrange] == 0
     pl = plot(1:5)
     @test pl[1][1][:fillrange] == 0

test/test_pipeline.jl

@@ -19,9 +19,8 @@ end
 end
 
 @testset "Slicing" begin
-
     @test plot(1:5, fillrange = 0)[1][1][:fillrange] == 0
-    data4 = rand(4,4)
+    data4 = rand(4, 4)
     for i in axes(data4, 1)
         @test plot(data4, fillrange = 0)[1][i][:fillrange] == 0
         @test plot(data4, fillrange = [1, 2])[1][i][:fillrange] == [1.0, 2.0]