Improve: description Practice Tests Exams

Author: danieldanielecki

README.md

@@ -79,7 +79,7 @@ We are so thankful for every contribution, which makes sure we can deliver top-n
 
 - 🤩 Excitement to learn!
 - 0️⃣ Prior knowledge is required;
-- ✅ You can pass the Professional Scrum Developer I (PSD I) Exam solely based on our Practice Exams.
+- ✅ You can pass the Professional Scrum Developer I (PSD I) Exam solely based on our Practice Tests Exams.
 
 ## Table of Contents