access_control.md: fix insecure password example

---

• Target branch: main
• Changes should be cherry-picked to 24.1: no
• Staging: https://docs.binary.picodata.io/picodata/fix_pw_example/

docs/tutorial/access_control.md

@@ -223,7 +223,7 @@ CREATE USER <user name>
 Пример:
 
 ```sql
-CREATE USER "alice" WITH PASSWORD 'totallysecret' USING chap-sha1
+CREATE USER "alice" WITH PASSWORD 'T0tallysecret' USING chap-sha1
 CREATE USER "bob" USING ldap
 ```