Add Java version in READMEs build section

GLaDAP · web-flow · commit 8f4eac191630 · 2023-05-26T16:52:43.000+02:00
diff --git a/README.md b/README.md
@@ -42,6 +42,7 @@ mvn clean package -DskipTests -Pcypher,postgres
 ## User's guide
 
 ### Building the project
+This project uses Java 11.
 
 To build the project, run:
 
