Fix READMEs to match (external LLM) values file names

[eero-t]

Description

Fix #993 values file names to match README.

Issues

n/a.

Type of change

• Bug fix (non-breaking change which fixes an issue)

Dependencies

n/a.

Tests

CI.

[lianhao]

I think we need to fix README, the variant_ prefix here is meant to temporarily skip CI

[eero-t]

I think we need to fix README, the variant_ prefix here is meant to temporarily skip CI

Thanks, done.

[eero-t]

I think we need to fix README, the variant_ prefix here is meant to temporarily skip CI

Btw. was the merged #1140 supposed to fix CI for external endpoints?

[lianhao]

I think we need to fix README, the variant_ prefix here is meant to temporarily skip CI

Btw. was the merged #1140 supposed to fix CI for external endpoints?

Nope. We also need to Suyue's help to setup the corresponding secrets to be used by #1140