docs: Correct wording in CLI configuration page (#36811)

website/docs/cli/config/config-file.mdx

@@ -13,7 +13,8 @@ This topic describes how create a configuration file to customize the behavior o
 The CLI configuration file configures per-user settings for CLI behaviors,
 which apply across all Terraform working directories. This is separate from
 [your infrastructure configuration](/terraform/language). 
-You can define custom configurations in file with the `.terraformrc` extention a file named `terraform.rc`.
+You can define custom configurations in file called `.terraformrc` or `terraform.rc`
+depending on the host operating system as explained below.
 
 ## Locations