Fix typo in ignored-tests.txt

BUG=skia:

Review URL: https://codereview.chromium.org/475583002

expectations/gm/ignored-tests.txt

diff --git a/expectations/gm/ignored-tests.txt b/expectations/gm/ignored-tests.txt
index a7ea3a6..5a5ffff 100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -52,7 +52,7 @@
 complexclip2_rect_aa
 bigblurs
 simpleaaclip_rect
-aarectmoes
+aarectmodes
 bigmatrix
 mixed_xfermodes
 aaclip