Update wiki and other supporting documentation to reflect changes for R20, R21, ff.

[idiom-bytes]

DoD:

• [x] Update wiki and any other locations (i.e. how to submit proposal) so we are describing limits (100k usd) and other mechanisms (i.e. retroactive only) for Round 20. This may include: => Wiki main page => Wiki how to apply for funding => Wiki criteria and other pages => Notion pages => Blog posts, etc...
• [x] Update blog post. R21 + R22 will be 1 month long @ 75k. R23 will be 2 months long @ 150k (170k total w Algovera)
• [ ] Update wiki with further changes, R21 and R22, and further, R23

[malvonme]

First step ☑️ https://github.com/oceanprotocol/oceandao/wiki

• Updated with all Round 20 changes
• An elaborated/contextualized explanation of our new 100k USD lifetime cap.
• Cleaned from "historic fragments (e.g. In Round 9 we introduced)" and streamlined the info,
• The latter being in line with feedback from Trent wrt to DAO Blog Posts, short, sweet, efficient, no historic fragments

Think we got a consistent, easy/well digestible Wiki Page again now, at current state.

Will keep this ticket open, want to give it some more love for the deeper changes coming (R21/22, also R23ff), but will do it with more focus and fresh eyes early next week, as it shall not just be "added/dumped" into the current Doc-Structure, but shall remain similarly consistent / easy to grasp.

Added new DoD point for this.

CC @trentmc