fix: remove useless @startuml and @enduml directives

src/cmd/library/generate/templates/library_bootstrap.rs

@@ -1,5 +1,4 @@
-pub const TEMPLATE: &str = r##"@startuml
-{%- block header %}{% endblock header %}
+pub const TEMPLATE: &str = r##"{%- block header %}{% endblock header %}
 
 ' by default the inclusion mode is remote
 !if (%not(%variable_exists("$INCLUSION_MODE")))
@@ -177,5 +176,4 @@ skinparam DefaultFontColor $FONT_COLOR
 !endprocedure
 {% endblock procedure_GroupElement -%}
 
-{%- block footer %}{% endblock footer %}
-@enduml"##;
+{%- block footer %}{% endblock footer %}"##;

src/cmd/library/generate/templates/package_bootstrap.rs

@@ -1,5 +1,3 @@
-pub const TEMPLATE: &str = r##"@startuml
-{% block header %}{% endblock header %}
+pub const TEMPLATE: &str = r##"{% block header %}{% endblock header %}
 {% block content %}{% endblock content %}
-{% block footer %}{% endblock footer %}
-@enduml"##;
+{% block footer %}{% endblock footer %}"##;

src/cmd/library/generate/templates/package_full.rs

@@ -1,10 +1,8 @@
-pub const TEMPLATE: &str = r##"@startuml
-{% block header %}{% endblock header %}
+pub const TEMPLATE: &str = r##"{% block header %}{% endblock header %}
 {% block content %}
 include('{{ data.package_urn }}/bootstrap')
 {% for item in data.items -%}
 include('{{ item.item_urn }}')
 {% endfor %}
 {% endblock content %}
-{% block footer %}{% endblock footer %}
-@enduml"##;
+{% block footer %}{% endblock footer %}"##;