diff --git a/docs/architecture/diagrams/model_timeline.md b/docs/architecture/diagrams/model_timeline.md
index bb6c11bb2..aa4167163 100644
--- a/docs/architecture/diagrams/model_timeline.md
+++ b/docs/architecture/diagrams/model_timeline.md
@@ -23,6 +23,7 @@ the `django-model2puml` plugin.
 
 <details>
 <summary>PlantUML source code</summary>
+
 ```plantuml
 @startuml
 
@@ -138,4 +139,5 @@ user3 -right[#green]-> DomainInvitation : **/domain/<id>/users/add**
 
 @enduml
 ```
+
 </details>
diff --git a/docs/architecture/diagrams/models_diagram.md b/docs/architecture/diagrams/models_diagram.md
index 23e4091e8..04d95ee09 100644
--- a/docs/architecture/diagrams/models_diagram.md
+++ b/docs/architecture/diagrams/models_diagram.md
@@ -12,6 +12,7 @@ $ docker compose app ./manage.py generate_puml --include registrar
 
 <details>
 <summary>PlantUML source code</summary>
+
 ```plantuml
 @startuml 
 class "registrar.Contact <Registrar>" as registrar.Contact #d6f4e9 {
@@ -264,4 +265,5 @@ class "registrar.Website <Registrar>" as registrar.Website #d6f4e9 {
 
 @enduml
 ```
+
 </details>