Update core.md

Co-authored-by: Emil Bäckmark <emil.backmark@ericsson.com>
Signed-off-by: Owen Bower Adams <owen+github@obowersa.net>

core.md

@@ -36,7 +36,7 @@ track the build and release progress on a particular software artifact.
 | source | `URI-Reference` | See [source](spec.md#source-subject) | |
 | type | `String` | See [type](spec.md#type-subject) | `pipelineRun` |
 | pipelineName  | `String` | The name of the pipeline | `MyPipeline`, `Unit tests for my repo` |
-| outcome | `String (enum)` | outcome of a finished `pipelineRun` | `success`, `error` or `failure`|
+| outcome | `String` | outcome of a finished `pipelineRun` | `success`, `error` or `failure`|
 | url | `URI` | url to the `pipelineRun` | `https://dashboard.org/namespace/pipelinerun-1234`, `https://api.cdsystem.com/namespace/pipelinerun-1234` |
 | errors | `String` | In case of error or failed pipeline, provides details about the failure | `Invalid input param 123`, `Timeout during execution`, `pipelineRun cancelled by user`, `Unit tests failed`|
 
@@ -56,7 +56,7 @@ associated, in which case it is acceptable to generate only taskRun events.
 | type | `String` | See [type](spec.md#type-subject) | `taskRun` |
 | taskName  | `String` | The name of the pipeline | `MyPipeline`, `Unit tests for my repo` |
 | pipelineRun | `Object` ([`pipelineRun`](#pipelinerun)) | The `pipelineRun` that this `taskRun` belongs to. | `{"id": "namespace/pipelinerun-1234"}`|
-| outcome | `String (enum)` | outcome of a finished `taskRun` | `success`, `error` or `failure`|
+| outcome | `String` | outcome of a finished `taskRun` | `success`, `error` or `failure`|
 | url | `URI` | url to the `taskRun` | `https://dashboard.org/namespace/taskrun-1234`, `https://api.cdsystem.com/namespace/taskrun-1234` |
 | errors | `String` | In case of error or failed pipeline, provides details about the failure | `Invalid input param 123`, `Timeout during execution`, `taskRun cancelled by user`, `Unit tests failed`|