update test name

Author: tsullivan

x-pack/legacy/plugins/reporting/server/routes/generation.test.ts

@@ -77,7 +77,7 @@ test(`returns 400 if there are no job params`, async () => {
   `);
 });
 
-test(`returns 400 if job params is empty`, async () => {
+test(`returns 400 if job params is invalid`, async () => {
   registerJobGenerationRoutes(
     mockReportingPlugin,
     (mockServer as unknown) as ServerFacade,