add type descriptions for complex input

[automaticgiant]

Description

attempt describing datasources input with complex type

it's my first time using these, and i'm also not 100% sure it captures everything about the module. just hoping to move the bar a little bit.

Motivation and Context

unclear what options are supported for data sources; caused #64 to be made then closed. documentation followup.

Breaking Changes

none

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects
  • at least passed validation, but configuration is not applyable in my account as is - tweaked zone but gave up after acm validation error
• I have executed pre-commit run -a on my pull request

hunter.morgan@INV-04069 terraform-aws-appsync % docker run -e "USERID=$(id -u):$(id -g)" -v $(pwd):/lint -w /lint ghcr.io/antonbabenko/pre-commit-terraform:$TAG run -a

[INFO] Initializing environment for https://github.com/antonbabenko/pre-commit-terraform.
[INFO] Initializing environment for https://github.com/pre-commit/pre-commit-hooks.
[INFO] Installing environment for https://github.com/pre-commit/pre-commit-hooks.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
Terraform fmt............................................................Passed
Terraform wrapper with for_each in module................................Passed
Terraform docs...........................................................Passed
Terraform validate with tflint...........................................Passed
Terraform validate.......................................................Failed
- hook id: terraform_validate
- exit code: 1

Validation failed: examples/complete
╷
│ Error: missing or corrupted provider plugins:
│   - registry.terraform.io/hashicorp/aws: there is no package for registry.terraform.io/hashicorp/aws 5.65.0 cached in .terraform/providers
│   - registry.terraform.io/hashicorp/random: there is no package for registry.terraform.io/hashicorp/random 3.6.2 cached in .terraform/providers
│ 
│ 
╵

check for merge conflicts................................................Passed
fix end of files.........................................................Passed
trim trailing whitespace.................................................Passed
hunter.morgan@INV-04069 terraform-aws-appsync % terraform validate
Success! The configuration is valid.

hunter.morgan@INV-04069 terraform-aws-appsync %