feat(docs): update Web2Json guides and docs

Author: nikerzetic-aflabs

docs/fdc/attestation-types/json-api.mdx

@@ -2,7 +2,7 @@
 title: JsonApi (deprecated)
 description: Data retrieval from Web2 JSON APIs with JQ transformations.
 keywords: [fdc, oracle, flare-data-connector, flare-network, json, api, web2]
-sidebar_position: 1
+sidebar_position: 100
 unlisted: true
 ---
 

docs/fdc/attestation-types/web2-json.mdx

@@ -44,3 +44,9 @@ The provided ABI signature is used to encode the jq-filtered JSON data.
 If encoding fails, the request is rejected.
 
 `LowestUsedTimestamp` is unlimited.
+
+## Whitelisted URLs
+
+Before a request to the FDC for data at an endpoint can be made, the specific URL must be whitelisted.
+On mainnets, this is done through government proposals (details in the [FIP.14](https://proposals.flare.network/FIP/FIP_14.html#31-process-of-adding-updating-or-removing-an-api-endpoint) proposal).
+On testnets, whitelisting is handled by the Flare Team.

docs/fdc/guides/_available_testnet.mdx

@@ -8,13 +8,9 @@ keywords: [ethereum, flare-data-connector, evm, flare-network]
 sidebar_position: 1
 ---
 
-import AvailableTestnet from "../_available_testnet.mdx";
-
-The `Web2Json` attestation type enables data collection from an arbitrary Web2 source.
+The `Web2Json` attestation type enables data collection from an arbitrary Web2 source, thought the source has to be whitelisted by the Flare Network in advance.
 You can learn more about it in the official [specification repo](/fdc/attestation-types/web2-json).
 
-<AvailableTestnet />
-
 We will now demonstrate how the FDC protocol can be used to collect the data of a given [Star Wars API](https://swapi.dev/) request.
 It will be a `GET` request to the URL `https://swapi.info/api/peaople/3`.
 The same procedure works for all public APIs.

docs/fdc/guides/foundry/04-web2-json.mdx

@@ -16,8 +16,6 @@ keywords:
 sidebar_position: 1
 ---
 
-import AvailableTestnet from "../_available_testnet.mdx";
-
 This is a guide on how to build a simple dApp using the [Flare Data Connector](/fdc/overview).
 It demonstrates how multiple attestation types, namely the [EVMTransaction](/fdc/attestation-types/evm-transaction) and [Web2Json](/fdc/attestation-types/web2-json), can be combined within the same app.
 

docs/fdc/guides/foundry/05-proof-of-reserves.mdx

@@ -18,16 +18,12 @@ keywords:
 sidebar_position: 1
 ---
 
-import AvailableTestnet from "../_available_testnet.mdx";
-
 In this guide, we will examine an example of a simple insurance dApp that uses the FDC's [Web2Json](/fdc/guides/hardhat/web2-json) attestation type.
 The dApp will allow users to create insurance policies for temperatures at specific coordinates falling below a specified threshold.
 Other users will be able to claim those policies, and the policies will be settled automatically by the contract.
 
 All the code described in this guide is available on GitHub in the [Flare Foundry starter repository](https://github.com/flare-foundation/flare-foundry-starter).
 
-<AvailableTestnet />
-
 ### The Process of Using the dApp
 
 To start with, let us describe the requirements for our Weather Insurance dApp.

docs/fdc/guides/foundry/06-weather-insurance.mdx

@@ -8,15 +8,11 @@ keywords: [ethereum, flare-data-connector, evm, flare-network]
 sidebar_position: 1
 ---
 
-import AvailableTestnet from "../_available_testnet.mdx";
-
 The [Web2Json guide](/fdc/guides/foundry/web2-json) demonstrates how the Flare Data Connector can be used to fetch Web2 and store it on the chain.
 The code for this and other examples is available within the [Flare Foundry starter](https://github.com/flare-foundation/flare-foundry-starter) repository.
 In this guide, we will see how the `Web2Json` example script within the Flare Foundry starter can be modified to work with custom data and custom contracts.
 That way, the example code can serve as the base building block for a custom project.
 
-<AvailableTestnet />
-
 ## Necessary modifications
 
 In order to run on custom data, the example code needs to be modified in four places only.

docs/fdc/guides/foundry/07-web2-json-for-custom-api.mdx

@@ -8,13 +8,9 @@ keywords: [ethereum, flare-data-connector, evm, cross-chain, payment]
 sidebar_position: 1
 ---
 
-import AvailableTestnet from "../_available_testnet.mdx";
-
 We will now demonstrate how the FDC protocol can be used to verify a payment that occurred on one chain (e.g., Sepolia testnet) and trigger an action on another (e.g., Coston2). In this example, verifying a specific USDC transfer on Sepolia will result in the minting of a commemorative NFT on Coston2.
 In this guide, we will follow the steps outlined under User Workflow in the [FDC overview](/fdc/overview).
 
-<AvailableTestnet />
-
 Our implementation requires handling the FDC voting round finalization process. To manage this, we will use separate scripts in `script/crossChainPayment.s.sol` that handle different stages of the validation process:
 
 ```solidity title="script/crossChainPayment.s.sol"

docs/fdc/guides/foundry/08-cross-chain-payment.mdx

@@ -9,8 +9,6 @@ keywords:
 sidebar_position: 1
 ---
 
-import AvailableTestnet from "../_available_testnet.mdx";
-
 This guide demonstrates a powerful cross-chain workflow using the Flare Data Connector (FDC).
 We will fetch data from a public Web2 API using the [Web2Json](/fdc/attestation-types/web2-json) attestation type on a Flare network (Coston2) and then use the resulting proof to trigger a state change on a different EVM-compatible blockchain, the XRPL EVM Sidechain Testnet.
 
@@ -22,8 +20,6 @@ This allows a verifier contract on the target chain to confirm the validity of F
 
 Before running any code, check if the `Relay` contract is already being relayed, or submit a request to the Flare team.
 
-<AvailableTestnet />
-
 For this example, we will:
 
 1. Deploy a custom verification infrastructure to the XRPL EVM Sidechain Testnet.

docs/fdc/guides/foundry/09-cross-chain-fdc.mdx

@@ -9,13 +9,9 @@ sidebar_position: 1
 unlisted: false
 ---
 
-import AvailableTestnet from "../_available_testnet.mdx";
-
-The `Web2Json` attestation type enables data collection from an arbitrary Web2 source.
+The `Web2Json` attestation type enables data collection from an arbitrary Web2 source, thought the source has to be whitelisted by the Flare Network in advance.
 You can learn more about it in the official [specification](/fdc/attestation-types/web2-json).
 
-<AvailableTestnet />
-
 We will now demonstrate how the FDC protocol can be used to collect the data of a given [Star Wars API](https://swapi.dev/) request.
 The request we will be making is `https://swapi.info/api/people/3`.
 The same procedure works for all public APIs.