Fix a/an in Javadoc#2216

ngocnhan-tran1996 wants to merge 1 commit intospring-projects:mainspring-projects/spring-data-relational:mainfrom

ngocnhan-tran1996:fix-javadoc-typosngocnhan-tran1996/spring-data-relational:fix-javadoc-typosCopy head branch name to clipboard