Updates

These are the changes that involves the changes to 2 pages.

1. ChainIndexer Framework
2. Matic.Js installation page

Author: amiabix

docs/tools/chain-indexer-framework/overview.md

@@ -12,7 +12,7 @@ Before we get into the details, let us understand why we need it and the problem
 
 ### 1. What is an EVM blockchain data indexer?
 
-An EVM (Ethereum Virtual Machine) blockchain data indexer is a specialised search engine for EVM-based blockchains like Ethereum and Polygon protocols. It sorts and organises blockchain data, making it faster and easier for developers to query and retrieve specific information for their decentralised applications (dApps).
+An EVM ([Ethereum Virtual Machine](https://ethereum.org/en/developers/docs/evm/)) blockchain data indexer is a specialised search engine for EVM-based blockchains like Ethereum and Polygon protocols. It sorts and organises blockchain data, making it faster and easier for developers to query and retrieve specific information for their decentralised applications (dApps).
 
 ### 2. Why do dApps need a blockchain data indexer?
 

docs/tools/matic-js/installation.md

@@ -1,3 +1,9 @@
+# Installation
+
+## Matic.JS
+
+[Matic.js](https://github.com/maticnetwork/matic.js) a JavaScript library build to facilitate interaction with the Polygon Network. It provides developers with a simplified operations on the Polygon Network, such as depositing, transferring, and withdrawing assets allowing developers to focus on building (DApps) without the need for in-depth knowledge of blockchain. 
+
 Matic.js is made up of a main library and an Ethereum library:
 
 ## Main library
@@ -7,7 +13,6 @@ The main library has the core logic and provides different APIs. The user intera
 ```sh
 npm i @maticnetwork/maticjs
 ```
-
 ## Ethereum library
 
 The Ethereum library allows us to use any favorite ether library. It is injected into maticjs using plugins.
@@ -28,3 +33,6 @@ npm install @maticnetwork/maticjs-web3
 ```sh
 npm install @maticnetwork/maticjs-ethers
 ```
+### System Requirements
+
+Ensure that your [Node.js](https://nodejs.org/en/)version is up to date. We recommend using Node.js version v18.19.1 for optimal compatibility.