Remove empty members box in Mermaid class diagram (#77)

mermaid-js/mermaid#3139

Author: ParanoidUser

_posts/2024-10-25-adr-templates.md

@@ -9,6 +9,11 @@ categories: [adr]
 The following UML class diagram shows that many templates for ADR capturing exist, including (but not limited to) MADR, Nygardian ADRs, and Y-Statements:
 
 ```mermaid
+---
+  config:
+    class:
+      hideEmptyMembersBox: true
+---
 classDiagram
   direction TB
   class ADR {