Documentation does not mention StackHashJsonProvider

[will-sargent-eero]

Describe the bug

StackHashJsonProvider is mentioned in the stack-hash document:

https://github.com/logstash/logstash-logback-encoder/blob/master/stack-hash.md#stackhashjsonprovider

but there is nominimal (the "more info") reference from the main documentation to stack-hash.md:

https://github.com/logstash/logstash-logback-encoder#customizing-stack-traces

So a user is not going to know that it's even possible to represent a stack hash as JSON by looking at the main README as there is no reference to it.

[philsttr]

There's a link to the stack hash document in

• Customizing Stack Traces, and
• Providers for LoggingEvents

Where else would you recommend?

[will-sargent-eero]

The link to the stack hash documents are fine in and of themselves, it's more a question of providing stackHash as a visible option in the documentation itself rather than referring to it by the class name.

So in https://github.com/logstash/logstash-logback-encoder#customizing-stack-traces it should be

"Computing and inlining hexadecimal hashes for each exception stack using inlineHash or stackHash provider (more info)"

and in https://github.com/logstash/logstash-logback-encoder/blob/master/stack-hash.md#stackhashjsonprovider mention that the XML element is stackHash specifically, and that it outputs the hash in JSON with "stash_hash" key.