Improve wording on doc in actions/security/ControlChecks.qll

Author: knewbury01

actions/ql/lib/codeql/actions/security/ControlChecks.qll

@@ -282,10 +282,10 @@ abstract class LabelCheck extends ControlCheck {
  *
  * It is possible to customize which deployment environments apply. The default behavior
  * of this model is for any environment to be considered a sanitizer.
- * If values are (currently manually/externally) provided in `actions/ql/lib/ext/config/deployment_environment.yml`
- * then those names will be used to define the valid sanitizer set.
- * To create a default of "no default sanitizer environment" one can add an
- * empty string to the data array in `deployment_environment.yml`.
+ * If values are provided then those names
+ * will be used to define the valid sanitizer set.
+ * To describe the situation where there is no acceptable sanitizer environment
+ * populate the predicate `enabledDeploymentEnvironmentDataModel` to contain a single empty string.
  */
 class EnvironmentCheck extends ControlCheck instanceof Environment {
   EnvironmentCheck() {