misc: Update attachment.md

[swills1]

The way the api key is being passed on line 29 is incorrect and will result in an unauthorized error. The Exception as is will complain that message is not an attribute. Please see my two changes.

Fixes

A short description of what this PR does.

Checklist

• [x] I acknowledge that all my contributions will be made under the project's license
• [x] I have made a material change to the repo (functionality, testing, spelling, grammar)
• [x] I have read the Contribution Guidelines and my PR follows them
• [x] I have titled the PR appropriately
• [x] I have updated my branch with the main branch
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have added the necessary documentation about the functionality in the appropriate .md file
• [x] I have added inline documentation to the code I modified

If you have questions, please file a support ticket.

[swills1]

My two changes are absolutely minor and I don't think need to go through every hurdle. I'm sure a maintainer can look, see what I am saying, and add themselves if they deem my changes appropriate. My changes are also to an example usage doc. Not the core library.

[copyPasteNinja]

Hello! Sorry to drop by here, I can't help anywhere else :( I'm having trouble using sendgrid in aws lambda. I tried uploading layer, all python lambda version (.7.8.9). Can I please have hint? I'm really stuck :(

[swills1]

Seems to work now, but definitely wasn't before. Going to test a bit more to be certain.

[copyPasteNinja]

Update: I did, figure it out. I used this terraform module to add my lambda layers and it worked just fine: https://registry.terraform.io/modules/terraform-aws-modules/lambda/aws/latest