Adds environment testcaserun.skipped md docs

Signed-off-by: Daniel Han <[email protected]>

testing-events.md

@@ -136,6 +136,7 @@ This event represents a skipped testCaseRun execution. The event should only be
 |--------------|-----------------------------------------------------------------|----------------------------------------------------------------------------------|-------------------------------------------------------------------------|----------|
 | id           | `String`                                                        | Uniquely identifies the subject within the source.                               | `unitest-abc`, `e2e-test1`, `scan-image1`                               | ✅        |
 | source       | `URI-Reference`                                                 | [source](spec.md#source--context-) from the context                              |                                                                         |          |
+| environment  | `Object` [`environment`](continuous-deployment.md/#environment) | The environment in which this testCaseRun would have run, but was skipped.       | `{"id": "1234"}`, `{"id": "dev", "source": "testkube-dev-123"}`         | ✅        |
 | testCase     | `Object` [`testCase`](#testcase)                                | Definition of the testCase being executed                                        | `{"id": "92834723894", "name": "Login Test", "type": "integration"}`    |          |
 | testSuiteRun | `Object` [`testSuiteRun`](#testsuiterun)                        | A testSuiteRun to associate this testCaseRun with a containing testSuiteRun      | `{"id":"Auth-TestSuite-execution-12334", "source": "staging/testkube"}` |          |
 | severity     | `String`                                                        | Severity if the test failed, one of `low`, `medium`, `high`, `critical`          | `critical`                                                              |