chore(pipes-sources): update readme to use SqsTarget (#31980)

Author: msambol

packages/@aws-cdk/aws-pipes-sources-alpha/README.md

@@ -40,7 +40,7 @@ const pipeSource = new sources.SqsSource(sourceQueue);
 
 const pipe = new pipes.Pipe(this, 'Pipe', {
   source: pipeSource,
-  target: new SomeTarget(targetQueue)
+  target: new SqsTarget(targetQueue)
 });
 ```
 
@@ -57,7 +57,7 @@ const pipeSource = new sources.SqsSource(sourceQueue, {
 
 const pipe = new pipes.Pipe(this, 'Pipe', {
   source: pipeSource,
-  target: new SomeTarget(targetQueue)
+  target: new SqsTarget(targetQueue)
 });
 ```
 
@@ -75,7 +75,7 @@ const pipeSource = new sources.KinesisSource(sourceStream, {
 
 const pipe = new pipes.Pipe(this, 'Pipe', {
   source: pipeSource,
-  target: new SomeTarget(targetQueue)
+  target: new SqsTarget(targetQueue)
 });
 ```
 
@@ -99,6 +99,6 @@ const pipeSource = new sources.DynamoDBSource(table, {
 
 const pipe = new pipes.Pipe(this, 'Pipe', {
   source: pipeSource,
-  target: new SomeTarget(targetQueue)
+  target: new SqsTarget(targetQueue)
 });
 ```

packages/@aws-cdk/aws-pipes-sources-alpha/rosetta/default.ts-fixture

@@ -6,6 +6,7 @@ import * as ddb from 'aws-cdk-lib/aws-dynamodb';
 import { Construct } from 'constructs';
 import * as pipes from '@aws-cdk/aws-pipes-alpha';
 import * as sources from '@aws-cdk/aws-pipes-sources-alpha';
+import { SqsTarget } from '@aws-cdk/aws-pipes-targets-alpha';
 
 class SomeTarget implements pipes.ITarget {
   targetArn: string;