docs(usage): follow README.md formatting

Author: pergatore

README.md

@@ -127,7 +127,7 @@ Flags:
   -b, --tf-binary string       Path to Terraform binary (env: TERRAMAID_TF_BINARY)
   -p, --tf-plan string         Path to Terraform plan file (env: TERRAMAID_TF_PLAN)
   -w, --working-dir string     Working directory for Terraform (env: TERRAMAID_WORKING_DIR) (default ".")
-  -v, --verbose                Verbose output to terminal (boolean) (env: TERRAMAID_VERBOSE) (default false)
+  -v, --verbose bool           Verbose output to terminal (env: TERRAMAID_VERBOSE) (default false)
 
 Use "terramaid [command] --help" for more information about a command.
 ```