DATAMONGO-1919 - Polishing.

Fix typo, use diamond syntax where possible.

Author: mp911de

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoSimpleTypes.java

@@ -43,13 +43,13 @@ public abstract class MongoSimpleTypes {
 	public static final Set<Class<?>> AUTOGENERATED_ID_TYPES;
 
 	static {
-		Set<Class<?>> classes = new HashSet<Class<?>>();
+		Set<Class<?>> classes = new HashSet<>();
 		classes.add(ObjectId.class);
 		classes.add(String.class);
 		classes.add(BigInteger.class);
 		AUTOGENERATED_ID_TYPES = Collections.unmodifiableSet(classes);
 
-		Set<Class<?>> simpleTypes = new HashSet<Class<?>>();
+		Set<Class<?>> simpleTypes = new HashSet<>();
 		simpleTypes.add(DBRef.class);
 		simpleTypes.add(ObjectId.class);
 		simpleTypes.add(BsonObjectId.class);

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/util/MongoClientVersion.java

@@ -51,7 +51,7 @@ public static boolean isMongo34Driver() {
 	}
 
 	/**
-	 * @return {lliteral true} if MongoDB Java driver is on classpath.
+	 * @return {@literal true} if MongoDB Java driver is on classpath.
 	 */
 	public static boolean isAsyncClient() {
 		return IS_ASYNC_CLIENT;