examples: Fix HTML injection in templates

examples/data/templates/image-left.html.j2

@@ -14,7 +14,7 @@
 			{%- endif -%}
 		/>
 		<p id="text">
-			{{ schild.text|default(lipsum(n=1, min=5, max=10)) }}
+			{{ schild.text|default(lipsum(n=1, min=5, max=10))|e }}
 		</p>
 	</div>
 {% endblock content %}

examples/data/templates/text-only.html.j2

@@ -6,7 +6,7 @@
 {%- block content -%}
 	<div>
 		<p id="text">
-			{{ schild.text|default(lipsum(n=2, min=5, max=10)) }}
+			{{ schild.text|default(lipsum(n=2, min=5, max=10))|e }}
 		</p>
 	</div>
 {% endblock content %}