Update test/statmodels.jl

Co-authored-by: David Müller-Widmann <devmotion@users.noreply.github.com>

Author: andreasnoack

test/statmodels.jl

@@ -23,7 +23,7 @@ x2  -23.14            Great  56    0.13  0.3467
 x3    1.56734e-13     Bad     2    0.00  <1e-15
 ───────────────────────────────────────────────"""
 
-@test sprint(show, "text/plain", ct_noname) == """
+@test repr("text/plain", ct_noname) == """
 ────────────────────────────────────────────────
           Estimate  Comments  df       t       p
 ────────────────────────────────────────────────