Fix tls-ca key for yaml

[netixx]

There was a typo (I think) with yaml decoding key for tls-ca on tagets. It was "tlsca"

This aligns it with the other keys to be "tls-ca".

[karimra]

Thanks for catching this.
For the record, that struct tag does not influence config reading. The YAML unmarshaling is based on the mapstructure struct tag.

[netixx]

I was having the issue using "tls-ca" in my yaml config which wasn't taken into account (checked using the debug logs of the loader), so I think mapstructure is not used here ?

I see in the code that

// unmarshal the bytes into a map of targetConfigs
	err = yaml.Unmarshal(b, result)

is done, so I do believe that the yaml tag is used ?

[karimra]

Ah yes you are right, the yaml struct tags will be used with loaders. The mapstructure tag is used when reading the main config.