fixing test configuration

Author: perfetti

test/README.md

@@ -24,7 +24,7 @@ npm install
 
 ```bash
 # Open Cypress GUI for development
-npm run test:local
+npm run test:gui
 
 # Run tests headlessly
 npm test

test/cypress/e2e/books_flow.cy.js

@@ -45,8 +45,7 @@ describe("Books Flow", () => {
 
   it("allows denying provisional books", () => {
     // Visit React1 app
-    cy.visit("/backend");
-
+    cy.visit("/backend/");
     // Propose a new book
     cy.contains("button", "Propose New Book").click();
     cy.get('input[placeholder="Enter book title"]').type("Book To Deny");