docs/provider: Document new endpoint customizations in Custom Service…

… Endpoints Guide

References:

* hashicorp#8092
* hashicorp#8096 (comment)

website/docs/guides/custom-service-endpoints.html.md

@@ -46,36 +46,117 @@ If multiple, different Terraform AWS Provider configurations are required, see t
 The Terraform AWS Provider allows the following endpoints to be customized:
 
 - `acm`
+- `acmpca`
 - `apigateway`
+- `applicationautoscaling`
+- `appmesh`
+- `appsync`
+- `athena`
 - `autoscaling`
+- `backup`
+- `batch`
+- `budgets`
+- `cloud9`
 - `cloudformation`
+- `cloudfront`
+- `cloudhsm`
+- `cloudsearch`
+- `cloudtrail`
 - `cloudwatch`
 - `cloudwatchevents`
 - `cloudwatchlogs`
+- `codebuild`
+- `codecommit`
+- `codedeploy`
+- `codepipeline`
+- `cognitoidentity`
+- `cognitoidp`
+- `configservice`
+- `cur`
+- `datapipeline`
+- `datasync`
+- `dax`
 - `devicefarm`
+- `directconnect`
+- `dlm`
+- `dms`
+- `docdb`
+- `ds`
 - `dynamodb`
 - `ec2`
 - `ecr`
 - `ecs`
 - `efs`
+- `eks`
+- `elasticache`
+- `elasticbeanstalk`
+- `elastictranscoder`
 - `elb`
+- `emr`
 - `es`
 - `firehose`
+- `fms`
+- `fsx`
+- `gamelift`
+- `glacier`
+- `globalaccelerator`
+- `glue`
+- `guardduty`
 - `iam`
-- `kinesis_analytics`
+- `inspector`
+- `iot`
+- `kafka`
+- `kinesis_analytics` (**DEPRECATED** Use `kinesisanalytics` instead)
 - `kinesis`
+- `kinesisanalytics`
 - `kms`
 - `lambda`
-- `r53`
+- `lexmodels`
+- `licensemanager`
+- `lightsail`
+- `macie`
+- `mediaconnect`
+- `mediaconvert`
+- `medialive`
+- `mediapackage`
+- `mediastore`
+- `mediastoredata`
+- `mq`
+- `neptune`
+- `opsworks`
+- `organizations`
+- `pinpoint`
+- `pricing`
+- `r53` (**DEPRECATED** Use `route53` instead)
+- `ram`
 - `rds`
 - `redshift`
+- `resourcegroups`
+- `route53`
+- `route53resolver`
 - `s3`
 - `s3control`
+- `sagemaker`
+- `sdb`
+- `secretsmanager`
+- `securityhub`
+- `serverlessrepo`
+- `servicecatalog`
+- `servicediscovery`
 - `ses`
+- `shield`
 - `sns`
 - `sqs`
 - `ssm`
+- `stepfunctions`
+- `storagegateway`
 - `sts`
+- `swf`
+- `transfer`
+- `waf`
+- `wafregional`
+- `worklink`
+- `workspaces`
 
 ## Connecting to Local AWS Compatible Solutions