diff --git a/docs/features/techdocs/how-to-guides.md b/docs/features/techdocs/how-to-guides.md
index 6a70e9e2aa..29f985904f 100644
--- a/docs/features/techdocs/how-to-guides.md
+++ b/docs/features/techdocs/how-to-guides.md
@@ -548,7 +548,7 @@ title Login Sequence
 
 #### Referenced PlantUML Diagram Example
 
-Here, the markdown file refers to another file (_.puml or _.pu) which contains the diagram description.
+Here, the markdown file refers to another file (`*.puml` or `*.pu`) which contains the diagram description.
 
 ````md
 ```plantuml