docs: add deployment tag to nx plugin deploy guide frontmatter

Author: cogwirrel

site/src/content/docs/user-guide/deploy/deploy_with_nx_plugin_for_aws.mdx

@@ -2,6 +2,7 @@
 title: Deploy with Nx Plugin for AWS
 sidebar:
   label: "Nx Plugin for AWS"
+tags: [deployment]
 ---
 
 [Nx](https://nx.dev/) is a build system and monorepo tool for managing multi-project workspaces. The [Nx Plugin for AWS](https://awslabs.github.io/nx-plugin-for-aws/) extends Nx with generators that scaffold Strands agents, APIs, React websites, MCP servers, and more with infrastructure as code, packaging, and deployment configuration out of the box. It supports both Python and TypeScript, with a choice of [AWS CDK](https://docs.aws.amazon.com/cdk/) or [Terraform](https://developer.hashicorp.com/terraform) for infrastructure management.