add link to ways to start localstack container for s3 guide (#1050)

Co-authored-by: Harsh Mishra <[email protected]>

Author: RinkiyaKeDad

content/en/user-guide/aws/s3/index.md

@@ -20,7 +20,7 @@ The supported APIs are available on our [API coverage page](https://docs.localst
 
 This guide is designed for users new to S3 and assumes basic knowledge of the AWS CLI and our [`awslocal`](https://github.com/localstack/awscli-local) wrapper script.
 
-Start your LocalStack container using your preferred method.
+Start your LocalStack container using your [preferred method](https://docs.localstack.cloud/getting-started/installation/).
 We will demonstrate how you can create an S3 bucket, manage S3 objects, and generate pre-signed URLs for S3 objects.
 
 ### Create an S3 bucket