docs: getting started guide error about max length of name and dry-run #1100

Description

New to agentcore, found 2 issues on getting started guide:

name's max length (36 -> 23)

The docs that include wrong information:
https://docs.aws.amazon.com/bedrock-agentcore/latest/devguide/runtime-get-started-cli.html

--name – The project name (alphanumeric, starts with a letter, max 36 characters).

Error occured when I gave it a name LangGraphOpenAiNoMemoryNoTool, it's not long (29 chars) but not allowed

agentcore create \
  --name LangGraphOpenAiNoMemoryNoTool \
  --framework LangChain_LangGraph \
  --model-provider OpenAI \
  --memory none \
  --build CodeZip

Project name must be 23 characters or less

unknown option '--plan'

agentcore deploy --plan

agentcore deploy --plan
error: unknown option '--plan'

Steps to Reproduce

1. Open https://docs.aws.amazon.com/bedrock-agentcore/latest/devguide/runtime-get-started-cli.html
2. Follow the guidance to create a new project

Expected Behavior

1. Should allow 36 characters or update doc.
2. Should allow --plan or update doc.

Actual Behavior

wrong doc

CLI Version

No response

Operating System

macOS

Additional Context

No response