Apply suggestions from code review

Co-authored-by: Jared Baker <[email protected]>

Author: johnsonaj

website/docs/r/emrserverless_application.html.markdown

@@ -59,7 +59,7 @@ resource "aws_emrserverless_application" "example" {
 }
 ```
 
-### Application Configuration Usage
+### Runtime Configuration Usage
 
 ```terraform
 resource "aws_emrserverless_application" "example" {
@@ -89,7 +89,7 @@ resource "aws_emrserverless_application" "example" {
 This resource supports the following arguments:
 
 * `region` - (Optional) Region where this resource will be [managed](https://docs.aws.amazon.com/general/latest/gr/rande.html#regional-endpoints). Defaults to the Region set in the [provider configuration](https://registry.terraform.io/providers/hashicorp/aws/latest/docs#aws-configuration-reference).
-* `application_configuration` - (Optional) A configuration specification to be used when provisioning an application. A configuration consists of a classification, properties, and optional nested configurations. A classification refers to an application-specific configuration file. Properties are the settings you want to change in that file.
+* `runtime_configuration` - (Optional) A configuration specification to be used when provisioning an application. A configuration consists of a classification, properties, and optional nested configurations. A classification refers to an application-specific configuration file. Properties are the settings you want to change in that file.
 * `architecture` - (Optional) The CPU architecture of an application. Valid values are `ARM64` or `X86_64`. Default value is `X86_64`.
 * `auto_start_configuration` - (Optional) The configuration for an application to automatically start on job submission.
 * `auto_stop_configuration` - (Optional) The configuration for an application to automatically stop after a certain amount of time being idle.
@@ -113,7 +113,7 @@ This resource supports the following arguments:
 * `enabled` - (Optional) Enables the application to automatically stop after a certain amount of time being idle. Defaults to `true`.
 * `idle_timeout_minutes` - (Optional) The amount of idle time in minutes after which your application will automatically stop. Defaults to `15` minutes.
 
-### application_configuration Arguments
+### runtime_configuration Arguments
 
 * `classification` - (Required) The classification within a configuration.
 * `properties` - (Optional) A set of properties specified within a configuration classification.