docs(ci): updated references to k8s workflow

.holo/README.md

@@ -15,4 +15,4 @@ By projecting this holobranch in GitHub Actions, a tree containing only the code
 as well as Kubernetes code from the upstream [cluster-template](https://github.com/JarvusInnovations/cluster-template)
 repository is generated.
 
-See [`ci/README.md`](../ci/README.md) for details on the pull request workflow for previewing and deploying Kubernetes changes.
+See [`kubernetes/README.md`](../kubernetes/README.md#gitops) for details on the pull request workflow for previewing and deploying Kubernetes changes.

ci/README.md

@@ -19,26 +19,4 @@ poetry run invoke release -f channels/test.yaml
 
 ## GitOps
 
-In this diagram, arrows represent human actions such as opening and merging PRs and nodes (except for the very first) represent automated actions such as `invoke` deploying to the cluster. Green nodes indicate a deployment while white nodes indicate an automated git action such as branch creation or commenting on a pull request.
-
-```mermaid
-flowchart TD
-classDef default fill:white, color:black, stroke:black
-classDef initial fill:lightblue, color:black
-classDef deploy fill:lightgreen, color:black
-
-pr[Push commits to a branch.\nDoes a test environment exist?]
-candidates_branch[GitHub Action renders candidates/branch-name]
-branch_diff[invoke diff renders on test PR]
-branch_invoke[invoke releases to test]
-
-candidates_main[GitHub Action builds images and renders candidates/main\nNote: if you stop here, no Kubernetes changes will actually be deployed.]
-prod_diff[invoke diff renders on prod PR]
-prod_invoke[invoke releases to prod]
-
-pr -- Yes --> candidates_branch -- "Open PR from candidates/branch-name to releases/test" --> branch_diff -- "Merge candidate PR to releases/test" --> branch_invoke -- Merge original PR to main after review and testing --> candidates_main -- "Open PR from candidates/main to releases/prod" --> prod_diff -- "Merge candidate PR to releases/prod" --> prod_invoke
-pr -- "No; merge to main after review" --> candidates_main
-
-class pr initial
-class branch_invoke,prod_invoke deploy
-```
+See [`kubernetes/README.md`](../kubernetes/README.md#gitops) for details on the pull request workflow for previewing and deploying Kubernetes changes.