Update README.md

README.md

@@ -30,7 +30,7 @@ SEM-DISNET ontology diagram shows an overview of the Classes and their principal
 This diagram follows the [Chowlk notation](https://chowlk.linkeddata.es/). For a better visualization, the different parts of the diagram can 
 be found disaggregated [here](diagrams/). 
 
-![diagram](diagrams/SEM-DISNET_ontology.png)
+![sem-disnet_diagram](diagrams/SEM-DISNET_ontology.png)
 
 ## Ontology (OWL)