Typos fix

[Hack666r]

Changes

1. File: /Create an ERC-20 Token in Solidity on Astar Network/2. Setting Up The Developement Environment/1. Setup MetaMask Using Astar Portal.md
   • Fixed bottons to bottoms, buttons (Line 34)
2. File: /Create your own Ethereum token in just 30 mins/2. Let's Start Coding/1. Write Your Token Smart Contract.md
   • Fixed intializes to initializes (Line 59)
3. File: /Create an ERC-20 Token in Solidity on Avalanche/3. Write Your First ERC20 Token/1. Writing an ERC20 Token in Solidity.md
   • Fixed intializes to initializes (Line 50)
4. File: /Launch your own token on Polygon Network in 30 mins/2. Let's Start Coding/1. Write Your Token Smart Contract.md
   • Fixed intializes to initializes (Line 54)

Purpose

• Improved documentation accuracy by fixing typographical errors.
• Ensured better readability and consistency.