More details in Inheritance markdown file regarding the constructor of super class and sub class.

[ATRI2107]

@dubesar I believe that in Inheritance markdown documentation more details regarding the calling of constructor of super class and sub class should be added.

[dubesar]

@ATRI2107 please go ahead and add in details, will review it.

[ATRI2107]

@dubesar I have created a PR regarding the same.