chore(redshift-alpha): formatting typos (aws#28224)

Saw some formatting issues that I'm fixing here.

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/@aws-cdk/aws-redshift-alpha/lib/cluster.ts

@@ -13,6 +13,7 @@ import { Endpoint } from './endpoint';
 import { ClusterParameterGroup, IClusterParameterGroup } from './parameter-group';
 import { CfnCluster } from 'aws-cdk-lib/aws-redshift';
 import { ClusterSubnetGroup, IClusterSubnetGroup } from './subnet-group';
+
 /**
  * Possible Node Types to use in the cluster
  * used for defining `ClusterProps.nodeType`.
@@ -22,34 +23,42 @@ export enum NodeType {
    * ds2.xlarge
    */
   DS2_XLARGE = 'ds2.xlarge',
+
   /**
    * ds2.8xlarge
    */
   DS2_8XLARGE = 'ds2.8xlarge',
+
   /**
    * dc1.large
    */
   DC1_LARGE = 'dc1.large',
+
   /**
    * dc1.8xlarge
    */
   DC1_8XLARGE = 'dc1.8xlarge',
+
   /**
    * dc2.large
    */
   DC2_LARGE = 'dc2.large',
+
   /**
    * dc2.8xlarge
    */
   DC2_8XLARGE = 'dc2.8xlarge',
+
   /**
    * ra3.xlplus
    */
   RA3_XLPLUS = 'ra3.xlplus',
+
   /**
    * ra3.4xlarge
    */
   RA3_4XLARGE = 'ra3.4xlarge',
+
   /**
    * ra3.16xlarge
    */
@@ -85,14 +94,14 @@ export interface Login {
    *
    * Do not put passwords in your CDK code directly.
    *
-   * @default a Secrets Manager generated password
+   * @default - a Secrets Manager generated password
    */
   readonly masterPassword?: SecretValue;
 
   /**
    * KMS encryption key to encrypt the generated secret.
    *
-   * @default default master key
+   * @default - default master key
    */
   readonly encryptionKey?: kms.IKey;
 }
@@ -104,15 +113,13 @@ export interface LoggingProperties {
   /**
    * Bucket to send logs to.
    * Logging information includes queries and connection attempts, for the specified Amazon Redshift cluster.
-   *
    */
-  readonly loggingBucket: s3.IBucket
+  readonly loggingBucket: s3.IBucket;
 
   /**
    * Prefix used for logging.
-   *
    */
-  readonly loggingKeyPrefix: string
+  readonly loggingKeyPrefix: string;
 }
 
 /**
@@ -196,7 +203,6 @@ export interface ClusterAttributes {
  * Properties for a new database cluster
  */
 export interface ClusterProps {
-
   /**
    * An optional identifier for the cluster
    *
@@ -385,7 +391,6 @@ export interface ClusterProps {
  * A new or imported clustered database.
  */
 abstract class ClusterBase extends Resource implements ICluster {
-
   /**
    * Name of the cluster
    */