Fix documentation and examples for Email Routing

[marco-lancini]

The current examples for the cloudflare_email_routing_rule and cloudflare_email_routing_rule_catch_all resources seem to be invalid.

This PR updates the examples to use the correct syntax. Tested and working with provider v.3.23.0

Expand for error logs

│ Error: Insufficient action blocks
│ 
│   on cloudflare-emails.tf line 9, in resource "cloudflare_email_routing_rule" "example":
│    9: resource "cloudflare_email_routing_rule" "example" {
│ 
│ At least 1 "action" blocks are required.
╵
╷
│ Error: Insufficient matcher blocks
│ 
│   on cloudflare-emails.tf line 9, in resource "cloudflare_email_routing_rule" "example":
│    9: resource "cloudflare_email_routing_rule" "example" {
│ 
│ At least 1 "matcher" blocks are required.
╵
╷
│ Error: Unsupported argument
│ 
│   on cloudflare-emails.tf line 13, in resource "cloudflare_email_routing_rule" "example":
│   13:   matcher = [
│ 
│ An argument named "matcher" is not expected here. Did you mean to define a block of type "matcher"?
╵
╷
│ Error: Unsupported argument
│ 
│   on cloudflare-emails.tf line 21, in resource "cloudflare_email_routing_rule" "example":
│   21:   action = [
│ 
│ An argument named "action" is not expected here. Did you mean to define a block of type "action"?

[github-actions]

changelog detected ✅

[jacobbednarz]

thanks @marco-lancini! 🎩

[github-actions]

This functionality has been released in v3.24.0 of the Terraform Cloudflare Provider.

Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!