fix variable name

this shouldn't be necessary; bug in simpleEvaluate. sigh

apps/languageWorkbench/examples/grammar/language.dl

@@ -1,10 +1,16 @@
 scope.Scope{id: "global", label: "global"}.
 
-scope.Defn{scopeID: "global", span: S, name: N, kind: "rule"} :-
-  ast.ruleDefn{id: I} &
-  ast.ident{parentID: I, span: S, text: N}.
+scope.Defn{scopeID: I, span: S, name: N, kind: K} :-
+  scope.someDefn{scopeID: I, span: S, name: N, kind: K}.
 
-scope.Var{scopeID: "global", name: N, span: S, kind: "rule"} :-
+scope.someDefn{scopeID: "global", span: S, name: N, kind: "rule"} :-
+  ast.ruleDefn{id: RuleID} &
+  ast.ident{parentID: RuleID, span: S, text: N}.
+
+scope.Var{scopeID: I, name: N, span: S, kind: K} :-
+  scope.someVar{scopeID: I, name: N, span: S, kind: K}.
+
+scope.someVar{scopeID: "global", name: N, span: S, kind: "rule"} :-
   ast.ref{span: S, text: N}.
 
 # scope.Placeholder{scopeID: I, span: S, kind: K} :-