update to yLockers Documentation for new launch

[rossgalloway]

updates to docs in preparations for new yLockers rollout of YearnBoostedStaker contract and other vault contracts for yPRISMA.

Changes:

• Update to yLockers Overview doc with additional information about the new contracts and ways to earn yield.
• Update to yPRISMA overview doc, adding pertinent information, updating contracts and links, and moving some data to the new FAQ page.
• Removed old yPRISMA FAQ page
• Added new yPRISMA FAQ page with new info and moved info from overview page.
• Added new yPRISMA guide page with new information about depositing in the new pools
• Updated sidebar to reflect changes. Also updated some yCRV docs titles to match yPRISMA titles in sidebar.
• Added line to custom css file to better format images in markdown files without having to use inline html.

  img {
  height: auto;
  }

  Apparently my linter hates double quotes so those all got changed in the css file too. Can revert if needed but doesn't seem like it matters.

thanks to @wavey0x, @dudesahn, and @MarcoWorms

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Name	Status	Preview	Comments	Updated (UTC)
yearn-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 8, 2024 6:05pm

[rossgalloway]

links are not nearly as bad as the check says.

Reminder though that we still need to add links for the new contracts in yLockers/overview, yPRISMA/overview, and yPRISMA/FAQ when they are available