fix comment

okue · okue · commit 80cc80104c04 · 2019-12-01T05:59:48.000+09:00
diff --git a/line-bot-api-client/src/main/java/com/linecorp/bot/client/LineSignatureValidator.java b/line-bot-api-client/src/main/java/com/linecorp/bot/client/LineSignatureValidator.java
@@ -26,7 +26,7 @@
 
 import lombok.NonNull;
 
-/*
+/**
  * This class validates value of the `X-LINE-Signature` header.
  */
 public class LineSignatureValidator {
