Change error message to prepare vector space handling

src/language/ASTNodeDataTypeBuilder.cpp

@@ -42,7 +42,7 @@ ASTNodeDataTypeBuilder::_buildDeclarationNodeDataTypes(ASTNode& type_node, ASTNo
     }
 
     if (name_node.is_type<language::name_list>()) {
-      throw parse_error("unexpected variable list for scalar space", name_node.begin());
+      throw parse_error("unexpected variable list for single space", name_node.begin());
     }
 
     Assert(name_node.is_type<language::name>());

tests/test_ASTNodeDataTypeBuilder.cpp

@@ -293,7 +293,7 @@ R (x,y);
         auto ast = ASTBuilder::build(input);
         ASTSymbolTableBuilder{*ast};
 
-        REQUIRE_THROWS_WITH(ASTNodeDataTypeBuilder{*ast}, "unexpected variable list for scalar space");
+        REQUIRE_THROWS_WITH(ASTNodeDataTypeBuilder{*ast}, "unexpected variable list for single space");
       }
     }
   }