Updated website docs and /twenty-server/.env (#8801)

Fix for the issue Incorrect Database Connection String in .env File
#8741

---------

Co-authored-by: Félix Malfait <felix@twenty.com>

packages/twenty-e2e-testing/drivers/env_variables.ts

@@ -3,7 +3,7 @@ import path from 'path';
 
 export const envVariables = (variables: string) => {
   let payload = `
-  PG_DATABASE_URL=postgres://postgres:twenty@localhost:5432/default
+  PG_DATABASE_URL=postgres://postgres:postgres@localhost:5432/default
   FRONT_BASE_URL=http://localhost:3001
   ACCESS_TOKEN_SECRET=replace_me_with_a_random_string_access
   LOGIN_TOKEN_SECRET=replace_me_with_a_random_string_login