update readme file

README.md

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+[DEMO LINK](https://maksym2493.github.io/react_decompose/)
+
 # React Decompose
 
 Split the `App.js` into components based on CSS blocks. CSS code should be split too.
+
 - You already have `Article`, `Header` and `Welcome` folders inside `./src/components/` with required files.
 - You may also create a folder for the `Navigation` component and move navigation there.
 - Tests expect you to use `export default` for all the components.
 
 ## Instructions
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 - Install Prettier Extention and use this [VSCode settings](https://mate-academy.github.io/fe-program/tools/vscode/settings.json) to enable format on save.
 - Implement a solution following the [React task guideline](https://github.com/mate-academy/react_task-guideline#react-tasks-guideline)
 - Open one more terminal and run tests with `npm test` to ensure your solutions is correct
-- Replace `<your_account>` with your Github username in the [DEMO LINK](https://<your_account>.github.io/react_decompose/) and add it to the PR description
+- Replace `<your_account>` with your Github username in the [DEMO LINK](https://maksym2493.github.io/react_decompose/) and add it to the PR description