Providing a synonym for value

Co-authored-by: Peter-Josef Meisch <[email protected]>

Author: youssef3wi

src/main/java/org/springframework/data/elasticsearch/annotations/Alias.java

@@ -39,7 +39,11 @@
     /**
      * @return Index alias name.
      */
+    @AliasFor("alias")
     String value();
+    
+    @AliasFor("value")
+    String alias()
 
     /**
      * @return Query used to limit documents the alias can access.