touched up error message for consistent matching

Author: tclose

pydra/engine/core.py

@@ -435,7 +435,7 @@ def done(self):
         if _result:
             if _result.errored:
                 self._errored = True
-                raise ValueError(f"Task {self.name!r} raised an error")
+                raise ValueError(f"Task {self.name!r} failed")
             else:
                 return True
         return False