change arrowhead for dot language for association relationsships

Author: Julfried

pylint/pyreverse/dot_printer.py

@@ -39,7 +39,7 @@ class HTMLLabels(Enum):
     EdgeType.ASSOCIATION: {
         "fontcolor": "green",
         "arrowtail": "none",
-        "arrowhead": "none",
+        "arrowhead": "normal",
         "style": "solid",
     },
     EdgeType.AGGREGATION: {