Add ref_key to findings docs (#289)

* Add ref_key to findings docs

* Update codeowners

Author: mahmoudadly-cobalt

.github/CODEOWNERS

@@ -1,2 +1,2 @@
-# Foundations Team.
-* @cobalthq/foundations
+# Customer Team.
+* @cobalthq/customer-team

versions/v2/content/findings.md

@@ -113,6 +113,7 @@ curl -X GET "https://api.us.cobalt.io/findings" \
             "version": "3.1"
           }
         ],
+        "ref_key":"#ExampleRef",
         "predecessor_id": null,
         "successor_id": null
       },
@@ -190,6 +191,7 @@ Cobalt Risk Classification (`severity`, a.k.a. `criticality`):
 | `type_category`          | XSS, SQLi, ... (about 30 more via the Cobalt Taxonomy)                                                                                                              |
 | `attachments`            | A list of finding attachments. Attachment download URLs are pre-authorized and will expire after 10 minutes.                                                        |
 | `cvsss`                  | A list of associated [CVSS](https://www.first.org/cvss/) records                                                                                                    |
+| `ref_key`                | A user-defined field for adding unique identifiers to findings, aiding tracking and linking to external systems.
 | `predecessor_id`         | The ID of the original finding that this finding was created from during the carry-over process. `null` if this finding was not created via the carry-over process. |
 | `successor_id`           | The ID of the finding that was created from this finding during the carry-over process. `null` if this finding was not carried over.                                |
 | `links.ui.url`           | A link to redirect an authorized user to this finding in the Cobalt web application                                                                                 |
@@ -275,6 +277,7 @@ curl -X GET "https://api.us.cobalt.io/findings/YOUR-FINDING-IDENTIFIER" \
         "version": "3.1"
       }
     ],
+    "ref_key":"#ExampleRef",
     "predecessor_id": null,
     "successor_id": null
   },
@@ -311,6 +314,7 @@ This endpoint retrieves a specific finding that belong to the organization speci
 | `type_category`          | XSS, SQLi, ... (about 30 more via the Cobalt Taxonomy)                                                                                                              |
 | `attachments`            | A list of finding attachments. Attachment download URLs are pre-authorized and will expire after 10 minutes.                                                        |
 | `cvsss`                  | A list of associated [CVSS](https://www.first.org/cvss/) records                                                                                                    |
+| `ref_key`                | A user-defined field for adding unique identifiers to findings, aiding tracking and linking to external systems.
 | `predecessor_id`         | The ID of the original finding that this finding was created from during the carry-over process. `null` if this finding was not created via the carry-over process. |
 | `successor_id`           | The ID of the finding that was created from this finding during the carry-over process. `null` if this finding was not carried over.                                |
 | `url`                    | The links.ui.url will redirect an authorized user to this finding in the Cobalt platform                                                                            |