Merge pull request #22718 from jKiler

* pr/22718:
  Polish contribution
  Polish

Author: snicoll

Diff for: spring-jdbc/src/main/java/org/springframework/jdbc/support/KeyHolder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,7 +30,7 @@
  * In the general case, the keys are returned as a List containing one Map
  * for each row of keys.
  *
- * <p>Most applications only use on key per row and process only one row at a
+ * <p>Most applications only use one key per row and process only one row at a
  * time in an insert statement. In these cases, just call {@code getKey}
  * to retrieve the key. The returned value is a Number here, which is the
  * usual type for auto-generated keys.