Issue #3: Done.

cypress/fixtures/loginToLogout.cy.js

@@ -39,6 +39,6 @@ describe("Login to Logout", () => {
     cy.url().should('include', 'member-area');
 
     // 登出
-    cy.get('.btn-sm').contains('log out').click();
+    cy.get('.btn-sm').contains('Logout').click();
   });
 });