fix(distance): update haversine test to expect straightline response

Author: MiniCodeMonkey

lib/__tests__/distance.test.js

@@ -228,13 +228,13 @@ describe("Distance API", () => {
       });
   });
 
-  it("Can use haversine mode", () => {
+  it("Can use haversine mode (maps to straightline)", () => {
     expect.assertions(1);
 
     return geocoder
       .distance(whiteHouse, [capitol], { mode: DistanceMode.Haversine })
       .then(response => {
-        expect(response.mode).toEqual("haversine");
+        expect(response.mode).toEqual("straightline");
       });
   });