docs: more description for config for each data pair

en/node-operators-guide/data-feed-v2.md

@@ -6,7 +6,7 @@ The **Orakl Network Data Feed** is one of the main Orakl Network solutions. The
 
 A single data feed is defined by a pair of an adapter and an aggregator, and can be accessed on-chain through a `FeedProxy` smart contract. The `FeedProxy` is an auxiliary contract that redirects read requests to `Feed` contract. The `Feed` contract holds all submissions from all node operators, and aggregated value that is served to consumers through `FeedProxy` contract.
 
-Every data feed is configured with 3 different intervals. `fetchInterval`, `aggregateInterval`, and `submitInterval`. Detailed specification for each feeds can be found in [orakl-config](https://github.com/Bisonai/orakl-config) as `configs.json` file. `OraklNode`, which stands for new datafeed performing off-chain aggregation, will execute each jobs based on defined intervals. Datafeed is updated once the finalized value have been generated off chain among OraklNodes.
+Detailed specification for each feeds can be found in [orakl-config](https://github.com/Bisonai/orakl-config) as `configs.json` file. Every data feed is configured with 3 different intervals. `fetchInterval`, `aggregateInterval`, and `submitInterval`. `OraklNode`, which stands for new datafeed performing off-chain aggregation, will execute each jobs based on defined intervals. Datafeed is updated once the finalized value have been generated off chain among OraklNodes. `address` stands for the Feed contract address which takes the value for certain pair. `feeds` contains definitions to fetch and parse value from datasource.
 
 The code is located under [`node` directory](https://github.com/Bisonai/orakl/tree/master/node) and it follows modular monolith pattern. The entrypoints can be found from `./node/cmd` directory, and its implementation codes can be found from `./node/pkg` directory.