Update DynamoDB Enhanced async client javadoc for transact size limit (#4414)

Author: cenedhryn

services-custom/dynamodb-enhanced/src/main/java/software/amazon/awssdk/enhanced/dynamodb/DynamoDbEnhancedAsyncClient.java

@@ -262,7 +262,7 @@ default CompletableFuture<BatchWriteResult> batchWriteItem(Consumer<BatchWriteIt
 
     /**
      * Retrieves multiple items from one or more tables in a single atomic transaction. TransactGetItem is a composite operation
-     * where the request contains a set of up to 25 get requests, each containing a table reference and a
+     * where the request contains a set of get requests, each containing a table reference and a
      * {@link GetItemEnhancedRequest}.
      * <p>
      * The additional configuration parameters that the enhanced client supports are defined
@@ -298,7 +298,7 @@ default CompletableFuture<List<Document>> transactGetItems(TransactGetItemsEnhan
 
     /**
      * Retrieves multiple items from one or more tables in a single atomic transaction. TransactGetItem is a composite operation
-     * where the request contains a set of up to 25 get requests, each containing a table reference and a
+     * where the request contains a set of get requests, each containing a table reference and a
      * {@link GetItemEnhancedRequest}.
      * <p>
      * The additional configuration parameters that the enhanced client supports are defined
@@ -336,7 +336,7 @@ default CompletableFuture<List<Document>> transactGetItems(
 
     /**
      * Writes and/or modifies multiple items from one or more tables in a single atomic transaction. TransactGetItem is a
-     * composite operation where the request contains a set of up to 25 action requests, each containing a table reference and
+     * composite operation where the request contains a set of action requests, each containing a table reference and
      * one of the following requests:
      * <ul>
      *     <li>Condition check of item - {@link ConditionCheck}</li>
@@ -384,7 +384,7 @@ default CompletableFuture<Void> transactWriteItems(TransactWriteItemsEnhancedReq
 
     /**
      * Writes and/or modifies multiple items from one or more tables in a single atomic transaction. TransactGetItem is a
-     * composite operation where the request contains a set of up to 25 action requests, each containing a table reference and
+     * composite operation where the request contains a set of action requests, each containing a table reference and
      * one of the following requests:
      * <ul>
      *     <li>Condition check of item - {@link ConditionCheck}</li>