Merge pull request #21695 from hashicorp/d-batch-bid-percentage

Update bid_percentage argument description

website/docs/r/batch_compute_environment.html.markdown

@@ -163,7 +163,7 @@ resource "aws_batch_compute_environment" "sample" {
 **compute_resources** is a child block with a single argument:
 
 * `allocation_strategy` - (Optional) The allocation strategy to use for the compute resource in case not enough instances of the best fitting instance type can be allocated. Valid items are `BEST_FIT_PROGRESSIVE`, `SPOT_CAPACITY_OPTIMIZED` or `BEST_FIT`. Defaults to `BEST_FIT`. See [AWS docs](https://docs.aws.amazon.com/batch/latest/userguide/allocation-strategies.html) for details. This parameter isn't applicable to jobs running on Fargate resources, and shouldn't be specified.
-* `bid_percentage` - (Optional) Integer of minimum percentage that a Spot Instance price must be when compared with the On-Demand price for that instance type before instances are launched. For example, if your bid percentage is 20% (`20`), then the Spot price must be below 20% of the current On-Demand price for that EC2 instance. This parameter is required for SPOT compute environments. This parameter isn't applicable to jobs running on Fargate resources, and shouldn't be specified.
+* `bid_percentage` - (Optional) Integer of maximum percentage that a Spot Instance price can be when compared with the On-Demand price for that instance type before instances are launched. For example, if your bid percentage is 20% (`20`), then the Spot price must be below 20% of the current On-Demand price for that EC2 instance. If you leave this field empty, the default value is 100% of the On-Demand price. This parameter isn't applicable to jobs running on Fargate resources, and shouldn't be specified.
 * `desired_vcpus` - (Optional) The desired number of EC2 vCPUS in the compute environment. This parameter isn't applicable to jobs running on Fargate resources, and shouldn't be specified.
 * `ec2_configuration` - (Optional) Provides information used to select Amazon Machine Images (AMIs) for EC2 instances in the compute environment. If Ec2Configuration isn't specified, the default is ECS_AL2. This parameter isn't applicable to jobs that are running on Fargate resources, and shouldn't be specified.
 * `ec2_key_pair` - (Optional) The EC2 key pair that is used for instances launched in the compute environment. This parameter isn't applicable to jobs running on Fargate resources, and shouldn't be specified.