Fix Javadoc.

See #4139
Original pull request: #4182.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/EvaluationOperators.java

@@ -179,10 +179,10 @@ public class EvaluationOperators {
 		}
 
 		/**
-		 * Creates new {@link EvaluationOperatorFactory.Expr}.
+		 * Creates new {@link LastObservationCarriedForward}.
 		 *
 		 * @param fieldReference must not be {@literal null}.
-		 * @return new instance of {@link EvaluationOperatorFactory.Expr}.
+		 * @return new instance of {@link LastObservationCarriedForward}.
 		 */
 		public static LastObservationCarriedForward locfValueOf(String fieldReference) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/CompoundIndex.java

@@ -177,8 +177,6 @@ public @interface CompoundIndex {
 	 * (language-specific rules for string comparison) to be applied on string properties being part of the index.
 	 * <p>
 	 * <strong>NOTE:</strong> Overrides {@link Document#collation()}.
-	 * <p>
-	 *
 	 *
 	 * @return empty String by default.
 	 * @see <a href=