Fixes from AWS Workshop testing (#428)

Closes #

## Description

Changes to code-server and jetbrains modules that were not caught during
initial unit-testing, that appear to be related to older versions of the
modules or recent changes.

## Type of Change

- [ ] New module
- [x] Bug fix
- [ ] Feature/enhancement
- [ ] Documentation
- [ ] Other

## Testing & Validation

- [ ] Tests pass (`bun test`)
- [ ] Code formatted (`bun run fmt`)
- [x] Changes tested locally

## Related Issues

None

---------

Co-authored-by: DevelopmentCats <christofer@coder.com>

registry/coder/templates/kubernetes-devcontainer/main.tf

@@ -427,14 +427,13 @@ module "code-server" {
   version = "~> 1.0"
 
   agent_id = coder_agent.main.id
-  agent_name = "main"
   order    = 1
 }
 
 # See https://registry.coder.com/modules/coder/jetbrains
 module "jetbrains" {
   count      = data.coder_workspace.me.start_count
-  source     = "registry.coder.com/modules/coder/jetbrains/coder"
+  source     = "registry.coder.com/coder/jetbrains/coder"
   version    = "~> 1.0"
   agent_id   = coder_agent.main.id
   agent_name = "main"