fix: correct Mermaid sequence diagram syntax for permissions list

Mermaid sequence diagrams don't support YAML-style lists with dashes
in message content. Changed the multi-line permission list to a single
comma-separated line to fix the parse error.

docs/content/architecture/module-integration-patterns.md

@@ -247,11 +247,7 @@ sequenceDiagram
     participant AuthzService
     
     Module->>ModuleManifest: Define permissions
-    ModuleManifest->>ModuleManifest: permissions:
-      - blog.post.create
-      - blog.post.read
-      - blog.post.update
-      - blog.post.delete
+    ModuleManifest->>ModuleManifest: permissions: blog.post.create, blog.post.read, blog.post.update, blog.post.delete
     
     Module->>PermissionGenerator: Generate permission code
     PermissionGenerator->>PermissionGenerator: Parse manifest