Update README.md

Author: trayanaboykova

README.md

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 # Programming Fundamentals with Java
-Coding exercises and projects from my education at <a href="www.softuni.bg">SoftUni</a>
+Coding exercises and projects from my education at <a href="https://softuni.bg/">SoftUni</a>
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 All of the solutions have passed 100/100 - you can check them here: <a href="https://judge.softuni.org/Contests/#!/List/ByCategory/145/Java-Fundamentals">Java Fundamentals</a>
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