fix using double quotes instead of single quotes

Author: ShaileshS1702

webapp/cypress/e2e/index.cy.js

@@ -84,7 +84,7 @@ describe('Submit', () => {
 
     // Submit
     cy.get('button').contains('Generer og send kvittering').click();
-    cy.get('button').contains("Godkjenn").click();
+    cy.get('button').contains('Godkjenn').click();
 
     // Wait for the submitResponse
     cy.wait('@submitResponse')