Update data apps default secrets

[MonikaFeigler]

Jira issue(s): PROOF-XXX

Changes:

---

[MonikaFeigler]

@pepamartinec can you please review my proposed changes? Did I describe it correctly, please? Thank you.

[pepamartinec]

Z pohledu usera to asi bude v pohode.

Kdybych chtel byt pintlich, tak pokud by se ta sekce mela jmenovat Default ENV vars, mela by toho obsahovat vic (tech envu je vic, museli bysme si je asi projit, co muze byt zajimavy pro usera). A nebo bych to cely prejmenoval na Access Storage from Data App a trochu podle toho upravil textaci, at je to proste navedeni jednoduse, jak se napojit na Storage (to je konec koncu asi to, co bych jako user v tom navodu hledal)

[MonikaFeigler]

@pepamartinec změnila jsem úvod na toto:

Access Storage from Data App

By default, the Keboola Streamlit Docker image includes two environment variables, which can be easily used to access keboola storage from your application:

Může to tak být?

[MonikaFeigler]

@hhanova can you please check it as well? Thank you.

[pepamartinec]

Mozna jeste takovy detail