Sort deprecated variables' references in ascending order

doc/ci/variables/deprecated_variables.md

@@ -20,15 +20,15 @@ future GitLab releases.**
 
 | 8.x name              | 9.0+ name               |
 | --------------------- |------------------------ |
+| `CI_BUILD_BEFORE_SHA` | `CI_COMMIT_BEFORE_SHA`  |
 | `CI_BUILD_ID`         | `CI_JOB_ID`             |
+| `CI_BUILD_MANUAL`     | `CI_JOB_MANUAL`         |
+| `CI_BUILD_NAME`       | `CI_JOB_NAME`           |
 | `CI_BUILD_REF`        | `CI_COMMIT_SHA`         |
-| `CI_BUILD_TAG`        | `CI_COMMIT_TAG`         |
-| `CI_BUILD_BEFORE_SHA` | `CI_COMMIT_BEFORE_SHA`  |
 | `CI_BUILD_REF_NAME`   | `CI_COMMIT_REF_NAME`    |
 | `CI_BUILD_REF_SLUG`   | `CI_COMMIT_REF_SLUG`    |
-| `CI_BUILD_NAME`       | `CI_JOB_NAME`           |
-| `CI_BUILD_STAGE`      | `CI_JOB_STAGE`          |
 | `CI_BUILD_REPO`       | `CI_REPOSITORY_URL`     |
-| `CI_BUILD_TRIGGERED`  | `CI_PIPELINE_TRIGGERED` |
-| `CI_BUILD_MANUAL`     | `CI_JOB_MANUAL`         |
+| `CI_BUILD_STAGE`      | `CI_JOB_STAGE`          |
+| `CI_BUILD_TAG`        | `CI_COMMIT_TAG`         |
 | `CI_BUILD_TOKEN`      | `CI_JOB_TOKEN`          |
+| `CI_BUILD_TRIGGERED`  | `CI_PIPELINE_TRIGGERED` |