remove docx and add to .gitignore
diff --git a/tests/visual_tests/.gitignore b/tests/visual_tests/.gitignore
index c861d1f..04bf55b 100644
--- a/tests/visual_tests/.gitignore
+++ b/tests/visual_tests/.gitignore
@@ -6,3 +6,4 @@
 *.tex
 *.synctex.gz
 *.lot
+*.docx