Polishing.

See #1022
Original pull request: #1039.

Author: mp911de

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/query/JdbcQueryMethod.java

@@ -218,7 +218,7 @@ private <T> T getMergedAnnotationAttribute(String attribute) {
 	}
 
 	/**
-	 * Returns whether the method has an annotated query.
+	 * @return {@code true} if the method has an annotated query.
 	 */
 	public boolean hasAnnotatedQuery() {
 		return findAnnotatedQuery().isPresent();