Adding content to Indexing and slicing arrays in Numpy

[meghana151]

I can add content- how to index and slice 1-D, 2-D arrays in numpy and some theoretical explanation as to how this process is happening.
Experience- Did three courses data science-1,2,3 in my college and did 2-3 projects on machine learning, computational astronomy etc.
Please assign me this issue.

[meghana151]

I have created two pull requests for these topics. The content has been added accordingly.