Update template-feature.md

docs/20-Requirement-management/templates/template-feature.md

@@ -34,12 +34,23 @@
 
 e.g. #8 #2
 
-**User interface mock-up**
+**Feature Mockup**
 
 *Add a picture or a link here. The mock-up should be essentially related to the feature/functionality.*
 
-
-![](https://openclipart.org/image/300px/svg_to_png/247488/1461589195.png)
+```plantuml
+salt
+{
+  Just plain text
+  [This is my button]
+  ()  Unchecked radio
+  (X) Checked radio
+  []  Unchecked box
+  [X] Checked box
+  "Enter text here   "
+  ^This is a droplist^
+}
+```
 
 
 **possible acceptance criteria or test cases**