Update runtests.jl

Added blank description "" to top level testset in order to minimize the footprint of the description being prefixed to the lower level testsets' names on the website.

Author: depial

exercises/practice/connect/runtests.jl

@@ -2,7 +2,7 @@ using Test
 
 include("connect.jl")
 
-@testset verbose = true begin
+@testset verbose = true "" begin
     @testset "an empty board has no winner" begin
         board = [
             ". . . . .",