Update all docs titles to human-readable and delete test cards

Titles now use proper casing (e.g. "Borgmatic" instead of "borgmatic",
"AI Assistance Guide" instead of "ai-assistance-guide") and match file
stems so wiki-links work without alternate anchor text. Also removes
the title-test-alpha/beta cards and their reference index entry.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/tutorials/adding-a-service.md

@@ -1,5 +1,5 @@
 ---
-title: adding-a-service
+title: Adding a Service
 tags:
   - tutorials
   - argocd

docs/tutorials/ai-assistance-guide.md

@@ -1,5 +1,5 @@
 ---
-title: ai-assistance-guide
+title: AI Assistance Guide
 tags:
   - tutorials
   - ai

docs/tutorials/contributing.md

@@ -1,5 +1,5 @@
 ---
-title: contributing
+title: Contributing
 tags:
   - tutorials
   - contributing

docs/tutorials/exploring-the-docs.md

@@ -1,5 +1,5 @@
 ---
-title: exploring-the-docs
+title: Exploring the Docs
 tags:
   - tutorials
   - getting-started

docs/tutorials/replicating-blumeops.md

@@ -1,5 +1,5 @@
 ---
-title: replicating-blumeops
+title: Replicating BlumeOps
 tags:
   - tutorials
   - replication

docs/tutorials/replication/argocd-config.md

@@ -1,5 +1,5 @@
 ---
-title: argocd-config
+title: ArgoCD Config
 tags:
   - tutorials
   - replication

docs/tutorials/replication/core-services.md

@@ -1,5 +1,5 @@
 ---
-title: core-services
+title: Core Services
 tags:
   - tutorials
   - replication

docs/tutorials/replication/kubernetes-bootstrap.md

@@ -1,5 +1,5 @@
 ---
-title: kubernetes-bootstrap
+title: Kubernetes Bootstrap
 tags:
   - tutorials
   - replication

docs/tutorials/replication/observability-stack.md

@@ -1,5 +1,5 @@
 ---
-title: observability-stack
+title: Observability Stack
 tags:
   - tutorials
   - replication

docs/tutorials/replication/tailscale-setup.md

@@ -1,5 +1,5 @@
 ---
-title: tailscale-setup
+title: Tailscale Setup
 tags:
   - tutorials
   - replication

docs/tutorials/tutorials.md

@@ -1,5 +1,5 @@
 ---
-title: tutorials
+title: Tutorials
 tags:
   - tutorials
 ---