[v2] Document `compact-throughput` configuration parameter

[devanbenz]

Create documentation for the following compact-throughput values

Environment variable

export INFLUXD_STORAGE_COMPACT_THROUGHPUT=<integer>

Configuration file field

storage-compact-throughput: <integer> // yaml

storage-compact-throughput = <integer> // toml

{ "storage-compact-throughput": <integer> } // json

[jstirnaman]

@devanbenz It should be storage-compact-throughput, not storage-compact-throughput-burst, in the configuration field?

[devanbenz]

@devanbenz It should be storage-compact-throughput, not storage-compact-throughput-burst, in the configuration field?

@jstirnaman
Correct, sorry, that was my bad--copy-paste error :(

Also we do not need the CLI flag, we are not going to add that to v2 since the value can already be configured.