Update task.md

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Author: stephen-hero

RefactoringAndItsPurpose/RefactoringTechniques/Theory/task.md

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 # Task 1/2: Refactoring techniques
 
 Developers refactor code to achieve different goals.
-Sometimes refactoring is the goal in itself: for example, splitting one monolith project into several microservices.
-It affects many parts of the codebase, and it’s called _**root-canal**_ refactoring.
+Sometimes, refactoring is the goal in itself: for example, when splitting one monolith project into several microservices.
+It affects many parts of the codebase and is called _**root-canal**_ refactoring.
 
-In another case, developers may perform refactorings while solving other tasks, such as developing a new feature or
+In other cases, developers may perform refactorings while solving other tasks, such as developing a new feature or
 fixing a bug, and it’s called _**floss refactoring**_.
 In this case, refactoring is secondary to the main changes.
 
 There are two ways to perform refactorings:
 - _Manually_: it is time-consuming and error-prone.
 - _Using automatic refactorings_: it requires knowledge of how refactoring works and of the IDE features to invoke it.
 
-There are many refactoring techniques. In this course, we will cover the most popular ones that are supported by IDEs, more specifically, by IntelliJ IDEA. Refactoring techniques themselves are language-independent and may be applied in different languages and IDEs.
+There are many refactoring techniques. In this course, we will cover the most popular ones supported by IDEs, more specifically, by IntelliJ IDEA. However, refactoring techniques are language-independent and may be applied across different languages and IDEs.