Merge pull request #22 from DataDog/anmarchenko/fix_readme

[NO-TICKET] remove ci-node arg for now

Author: anmarchenko

README.md

@@ -122,7 +122,7 @@ In CI‑node mode, DDTest also fans out across local CPUs on that node and furth
 | `--framework`       | `DD_TEST_OPTIMIZATION_RUNNER_FRAMEWORK`       |    `rspec` | Test framework (currently supported values: `rspec`, `minitest`).                                                                                                              |
 | `--min-parallelism` | `DD_TEST_OPTIMIZATION_RUNNER_MIN_PARALLELISM` | vCPU count | Minimum workers to use for the split.                                                                                                                                          |
 | `--max-parallelism` | `DD_TEST_OPTIMIZATION_RUNNER_MAX_PARALLELISM` | vCPU count | Maximum workers to use for the split.                                                                                                                                          |
-| `--ci-node`         | `DD_TEST_OPTIMIZATION_RUNNER_CI_NODE`         | `-1` (off) | Restrict this run to the slice assigned to node **N** (0‑indexed). Also parallelizes within the node across its CPUs.                                                          |
+|                     | `DD_TEST_OPTIMIZATION_RUNNER_CI_NODE`         | `-1` (off) | Restrict this run to the slice assigned to node **N** (0‑indexed). Also parallelizes within the node across its CPUs.                                                          |
 | `--worker-env`      | `DD_TEST_OPTIMIZATION_RUNNER_WORKER_ENV`      |       `""` | Template env vars per local worker (e.g., isolate DBs): `--worker-env "DATABASE_NAME_TEST=app_test{{nodeIndex}}"`.                                                             |
 | `--command`         | `DD_TEST_OPTIMIZATION_RUNNER_COMMAND`         |       `""` | Override the default test command used by the framework. When provided, takes precedence over auto-detection (e.g., `--command "bundle exec custom-rspec"`).                   |
 | `--tests-location`  | `DD_TEST_OPTIMIZATION_RUNNER_TESTS_LOCATION`  |       `""` | Custom glob pattern to discover test files (e.g., `--tests-location "custom/spec/**/*_spec.rb"`). Defaults to `spec/**/*_spec.rb` for RSpec, `test/**/*_test.rb` for Minitest. |