Fix LocalStack docs code include spacing

Author: cristianrgreco

AGENTS.md

@@ -20,6 +20,7 @@ It captures practical rules that prevent avoidable CI and PR churn.
 - If a public API changes, update the relevant docs in the same PR.
 - If new types are made part of the public API, export them from the package's `index.ts` in the same PR.
 - If new learnings or misunderstandings are discovered, propose an `AGENTS.md` update in the same PR.
+- In docs Markdown, keep `<!--codeinclude-->` blocks tight with no blank lines between the markers and the include line, or the rendered snippet will contain blank lines between code lines.
 - Tests should verify observable behavior changes, not only internal/config state.
   - Example: for a security option, assert a real secure/insecure behavior difference.
 - Test-only helper files under `src` (for example `*-test-utils.ts`) must be explicitly excluded from package `tsconfig.build.json` so they are not emitted into `build` and accidentally published.

docs/modules/localstack.md

@@ -38,7 +38,5 @@ Choose an image from the [container registry](https://hub.docker.com/r/localstac
 ### Create a S3 bucket
 
 <!--codeinclude-->
-
 [](../../packages/modules/localstack/src/localstack-container.test.ts) inside_block:localstackCreateS3Bucket
-
 <!--/codeinclude-->