docs update

Author: jeremiedb

test/layers/recurrent.jl

@@ -58,7 +58,7 @@ end
 
     @test primal[1] ≈ e
 
-    if VERSION <= v"1.6"
+    if VERSION < v"1.7"
         @test ∇Wi ≈ grads[:Wi]
         @test ∇Wh ≈ grads[:Wh]
         @test ∇b ≈ grads[:b]