Updated readme file.

Author: ChebanovDD

README.md

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 ### Terminal Sample
 
 A Match 3 game sample designed for text terminals.
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+> **Note:** The sample was tested using Rider's internal console. If you have a problem displaying symbols, configure your terminal to support [Unicode](https://en.wikipedia.org/wiki/Unicode) (in [UTF-8](https://en.wikipedia.org/wiki/UTF-8) form).
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 ## :cactus: Folder Structure
 
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