chore: add latest to site_url (#3966)

Author: hjgraca

mkdocs.yml

@@ -3,7 +3,7 @@ site_description: Powertools for AWS Lambda (TypeScript)
 site_author: Amazon Web Services
 repo_url: https://github.com/aws-powertools/powertools-lambda-typescript
 edit_uri: edit/main/docs
-site_url: https://docs.powertools.aws.dev/lambda/typescript
+site_url: https://docs.powertools.aws.dev/lambda/typescript/latest
 watch: [
   docs,
   packages/batch/src,