Use a more realistic example in one JS query unit test

lib/binding_web/test/query-test.js

@@ -175,15 +175,15 @@ describe("Query", () => {
 
     it('handles conditions that compare the text of capture to each other',  () => {
       tree = parser.parse(`
-        const ab = abc + 1;
-        const def = de + 1;
-        const ghi = ghi + 1;
+        ab = abc + 1;
+        def = de + 1;
+        ghi = ghi + 1;
       `);
 
       query = JavaScript.query(`
-        ((variable_declarator
-            name: (identifier) @id1
-            value: (binary_expression
+        ((assignment_expression
+            left: (identifier) @id1
+            right: (binary_expression
               left: (identifier) @id2))
          (eq? @id1 @id2))
       `);