Update function_accuracy.jl

Author: JeffreySarnoff

test/function_accuracy.jl

@@ -80,7 +80,7 @@ end
     @test test_rtol(rand_bigf, rand_vals, tanh, 1.0e-28)
 
     @test test_atol(rand_bigf, rand_vals, asinh, 1.0e-31)
-    @test test_rtol(rand_bigf, rand_vals, asinh, 1.0e-30)
+    @test test_rtol(rand_bigf, rand_vals, asinh, 1.0e-28)
 
     @test test_atol(rand_bigf, rand_vals, atanh, 1.0e-31)
     @test test_rtol(rand_bigf, rand_vals, atanh, 1.0e-30)