Optimism

## Brief Description of the Docs Request
There are a few outstanding items on [rpc methods](https://docs.optimism.io/node-operators/json-rpc) that require updating from a developer running an op stack chain. 

## Description of the Documentation You'd Like

- [ ] [admin section](https://docs.optimism.io/node-operators/json-rpc#admin), needs description
- [ ] [this item](https://docs.optimism.io/node-operators/json-rpc#admin_resetderivationpipeline), needs sample success output
- [ ] [this item](https://docs.optimism.io/node-operators/json-rpc#admin_startsequencer), missing sample success output
- [ ] [this item](https://docs.optimism.io/node-operators/json-rpc#admin_stopsequencer), needs sample success output
- [ ] [this last item](https://docs.optimism.io/node-operators/json-rpc#admin_sequenceractive), missing sample success output

## Links to Related Pages
n/a

## Additional Context
We want to provide the community with complete documentation. :)

[DOCS] Update RPC methods with op stack chain info

INSTRUCTIONS

Brief Description of the Docs Request

Description of the Documentation You'd Like

Links to Related Pages

Additional Context