docs: Grammar fixes (#566)

Author: Dor-bl

PULL_REQUEST_TEMPLATE.md

@@ -1,16 +1,16 @@
-## Change list
+## List of changes
 
-Please provide briefly described change list which are you going to propose. 
+Please provide a briefly described change list that you are going to propose. 
 
 ## Types of changes
 
-What types of changes are you proposing/introducing to .NET client?
+What types of changes are you proposing/introducing to the .NET client?
 _Put an `x` in the boxes that apply_
 
 - [ ] Bugfix (non-breaking change which fixes an issue)
 - [ ] New feature (non-breaking change which adds functionality)
 - [ ] New feature (non-breaking change which adds value to the project)
-- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Breaking change (fix or feature that would cause existing functionality not to work as expected)
 
 ## Documentation
 - [ ] Have you proposed a file change/ PR with appium to update documentation? 
@@ -21,6 +21,5 @@ _Put an `x` in the boxes that apply_
 
 ## Details
 
-Please provide more details about changes if it is necessary. If there are new features you can provide code samples which show the way they
-work and possible use cases. Also you can create [gists](https://gist.github.com) with pasted C# code samples or put them here using markdown. 
+Please provide more details about changes if it is necessary. If there are new features you can provide code samples showing how they work and possible use cases. Also, you can create [gists](https://gist.github.com) with pasted C# code samples or put them here using markdown. 
 About markdown please read [Mastering markdown](https://guides.github.com/features/mastering-markdown/) and [Writing on GitHub](https://help.github.com/categories/writing-on-github/)