The documentation lists following aliases for ApacheConf code highlight:

ApacheConf
aconf, apache, apacheconf, conf, htaccess

I've noticed that out of those conf and htaccess don't work, ending up in fallback language:

# Works
```aconf
ExpiresActive On
```
```apache
ExpiresActive On
```
```apacheconf
ExpiresActive On
```

# Doesn't work
```conf
ExpiresActive On
```
```htaccess
ExpiresActive On
```

Not sure if this could be documentation and/or upstream issue, Chroma Playground doesn't expose aliases to try, only language selection by name.

What version of Hugo are you using (hugo version)?

$ hugo version
hugo v0.99.1-d524067382e60ce2a2248c3133a1b3af206b6ef1+extended windows/amd64 BuildDate=2022-05-18T11:18:14Z VendorInfo=gohugoio

Does this issue reproduce with the latest release?

Yes.