Update message error in AssignmentDeleteCommand.ts

NodeApp/src/commander/assignment/subcommands/AssignmentDeleteCommand.ts

@@ -33,7 +33,7 @@ class AssignmentDeleteCommand extends CommanderCommand {
                     await DojoBackendManager.delAssignment(name);
                     spinner.succeed('Assignment deleted');
                } catch (error) {
-                    spinner.fail('Error while trying to deleting the assignment');
+                    spinner.fail('Error while trying to delete the assignment');
                }
           }
      }