Update project.py

Signed-off-by: tobiasb <tobias.brigl@voltstorage.com>
Signed-off-by: sezanzeb <proxima@hip70890b.de>

Author: sezanzeb

compose/project.py

@@ -67,7 +67,7 @@ def update_labels(cls, value, labels):
 
 def raise_errors(errors):
     """
-    Raise multiple errors as ProjectError.
+    Raise a dict with error messages as values as a single ProjectError.
     """
     if len(errors):
         combined_errors = '\n'.join([