Fix typing of document name in test

cypress/e2e/test-nextcloud.cy.js

@@ -56,7 +56,7 @@ describe('Test nextcloud', () => {
     // Create a new OO document with a random file name
     cy.visit('apps/files')
     cy.contains('button', 'New').click()
-    const file_rand = 'test-' + Math.random().toString(16).substr(2, 12)
+    const file_rand = '{selectAll}{del}test-' + Math.random().toString(16).substr(2, 12) + '.docx'
     cy.contains('button', 'New document').click()
     cy.get('input[placeholder="Filename"]').type(file_rand)
     cy.contains('span', 'Create').click()