chore: update README.md

Author: AyanavaKarmakar

README.md

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 # Pujo Atlas Site
 
-<img src="https://progress-bar.xyz/30/?title=Progress" alt="Progress Bar">
+<img src="https://progress-bar.xyz/50/?title=Progress" alt="Progress Bar">
 
 Welcome to Pujo Atlas - your ultimate guide for Pandal Hopping during Durga Puja in Kolkata! This open-source project aims to provide a comprehensive and user-friendly webapp that lists all the Durga Pujas happening around Kolkata and offers a host of features to make your pandal hopping experience seamless and enjoyable.