Korean translations: delete colon in translation for 'to'.

jgm · jgm · commit 892bcca2c943 · 2024-03-03T10:14:25.000-08:00
This was invalid YAML, and not desired anyway, since a colon
is added.
diff --git a/data/translations/ko.yaml b/data/translations/ko.yaml
@@ -14,4 +14,4 @@ Preface: 서문
 Proof: 증명
 References: 참고문헌
 Table: 표
-To: 수신:
+To: 수신
