SSS documentation updates

[jarry7]

Links to updated docs.

Comments as follows:

• Overview:
  • Small typo (energ -> energy).
  • Define (or link) to what Operational Storage Model is for the reader to reference (if unfamiliar).
  • Upfront definition or pointer to storage types and formulations (at the moment, StorageDispatchwithReserves is mentioned as an example). Just a link to these in PSY and SSS documentation could be useful.
  • Outline what the defaults are i.e. minimum required component data definition to use a specific StorageType and the resulting formulation the user would like to use.
  • SIIP reference probably needs to be updated Sienna
  • May be useful to include reference literature/background for the reader in the docs (just a suggestion).
• Quick Start Guide
  • Typo: data set => dataset
  • Need to create a link to the Tutorial section of the documentation (when ready)
• Tutorials
  • Potentially include a reference to operation_cost definition for storage component (not as clear in the write-up for the unfamiliar user).