Add Lambda recursion instructions

[sjwmoveon]

Description

Update deployment instructions to explicitly allow recursion in AWS Lambda, which is required for Spoke deployment.

Checklist:

• [n/a] I have manually tested my changes on desktop and mobile
• [n/a] The test suite passes locally with my changes
• [n/a] If my change is a UI change, I have attached a screenshot to the description section of this pull request
• [n/a] My change is 300 lines of code or less, or has a documented reason in the description why it’s longer
• I have made any necessary changes to the documentation
• [n/a] I have added tests that prove my fix is effective or that my feature works
• [n/a] My PR is labeled [WIP] if it is in progress