Improve readability of text (#5563)

src/data/roadmaps/qa/content/100-qa-basics/102-testing-approaches/index.md

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 # Testing Approaches
 
 Test approach has two techniques:
-Proactive - An approach in which the test design process is initiated as early as possible in order to find and fix the defects before the build is created.
-Reactive - An approach in which the testing is not started until after design and coding are completed.
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+* Proactive - An approach in which the test design process is initiated as early as possible in order to find and fix the defects before the build is created.
+* Reactive - An approach in which the testing is not started until after design and coding are completed.
 
 Three approaches are commonly used to implement functional testing: