Update dAPI reference and guides section

[vanshwassan]

Updated the /guides and /reference section for dAPIs for the upcoming market updates.

• Removed references regarding Self-funded and Managed dAPIs
• Updated the guides and reference sections for the new market updates and OEV
• Removed the Gelato guide for funding dAPI sponsor wallets

[github-actions]

Visit the preview URL for this PR (updated for commit aafee27):

https://vitepress-docs--pr723-dapi-updates-mcwhhugu.web.app

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[Ashar2shahid]

Did some changes @dcroote can you take a look before I merge

[dcroote]

Reads very well overall 👍

Needs update:

vitepress-docs/docs/guides/dapis/read-a-dapi/index.md

Line 94 in 35ad682

`@api3/contracts/v0.8/interfaces` library, which defines a function called

I found a couple of pages under Explore that need similar updating with regards to self/managed:

404:

vitepress-docs/docs/explore/dapis/what-are-dapis.md

Line 173 in 35ad682

- [Subscribing to Self-Funded dAPIs](/guides/dapis/subscribing-self-funded-dapis/index.md)

This whole page:

vitepress-docs/docs/explore/dapis/using-dapis.md

Lines 25 to 40 in 35ad682

	are two types of dAPIs:
	- Self-funded dAPIs
	- Managed dAPIs
	## Self-funded dAPIs
	Self-funded dAPIs currently rely on a single first-party oracle. They offer dApp
	owners the opportunity to make use of data feeds with minimal up-front
	commitment and are accessible
	[permissionlessly](https://www.gemini.com/en-US/cryptopedia/what-is-permissionless-crypto-permissionlessness-blockchain)
	for developers.
	### Using Self-funded dAPIs
	Self-funded dAPIs require any dApp owner to provide funds into a sponsor wallet.

[vanshwassan]

Reads very well overall 👍

Needs update:

vitepress-docs/docs/guides/dapis/read-a-dapi/index.md

Line 94 in 35ad682

`@api3/contracts/v0.8/interfaces` library, which defines a function called

I found a couple of pages under Explore that need similar updating with regards to self/managed:

404:

vitepress-docs/docs/explore/dapis/what-are-dapis.md

Line 173 in 35ad682

- [Subscribing to Self-Funded dAPIs](/guides/dapis/subscribing-self-funded-dapis/index.md)

This whole page:

vitepress-docs/docs/explore/dapis/using-dapis.md

Lines 25 to 40 in 35ad682

	are two types of dAPIs:
	- Self-funded dAPIs
	- Managed dAPIs
	## Self-funded dAPIs
	Self-funded dAPIs currently rely on a single first-party oracle. They offer dApp
	owners the opportunity to make use of data feeds with minimal up-front
	commitment and are accessible
	[permissionlessly](https://www.gemini.com/en-US/cryptopedia/what-is-permissionless-crypto-permissionlessness-blockchain)
	for developers.
	### Using Self-funded dAPIs
	Self-funded dAPIs require any dApp owner to provide funds into a sponsor wallet.

There's going to be another PR for the explore section with all the updated stuff.

[dcroote]

One minor change still needed, otherwise LGTM.

I might suggest merging this when the explore PR is also ready, otherwise there will be broken links and discordant content.

[vanshwassan]

One minor change still needed, otherwise LGTM.

I might suggest merging this when the explore PR is also ready, otherwise there will be broken links and discordant content.

I have merged Explore_2.1_March17 into this branch and closed #726. Also updated the links.