Merge branch 'eread/minor-grammar-change' into 'master'

Minor grammar change

See merge request gitlab-org/gitlab!40206

doc/ci/variables/predefined_variables.md

@@ -119,7 +119,7 @@ Kubernetes-specific environment variables are detailed in the
 | `CI_RUNNER_EXECUTABLE_ARCH`                   | all    | 10.6   | The OS/architecture of the GitLab Runner executable (note that this is not necessarily the same as the environment of the executor)                                                                                                                                                                                                                        |
 | `CI_RUNNER_ID`                                | 8.10   | 0.5    | The unique ID of runner being used                                                                                                                                                                                                                                                                                                                         |
 | `CI_RUNNER_REVISION`                          | all    | 10.6   | GitLab Runner revision that is executing the current job                                                                                                                                                                                                                                                                                                   |
-| `CI_RUNNER_SHORT_TOKEN`                       | all    | 12.3   | First eight characters of the runner's token used to authenticate new job requests. Used as runner's unique ID                                                                                                                                                                                                                                          |
+| `CI_RUNNER_SHORT_TOKEN`                       | all    | 12.3   | First eight characters of the runner's token used to authenticate new job requests. Used as the runner's unique ID                                                                                                                                                                                                                                         |
 | `CI_RUNNER_TAGS`                              | 8.10   | 0.5    | The defined runner tags                                                                                                                                                                                                                                                                                                                                    |
 | `CI_RUNNER_VERSION`                           | all    | 10.6   | GitLab Runner version that is executing the current job                                                                                                                                                                                                                                                                                                    |
 | `CI_SERVER`                                   | all    | all    | Mark that job is executed in CI environment                                                                                                                                                                                                                                                                                                                |