Update README.md

[SREELAKSHMI-NAYATH]

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[rubenvarela]

If I may, there's a few items here that are wrong. Most are technical terms that have been changed.

• notMNIST -> not NIST — This is wrong. notMNIST is the correct name.
• scikit-learn -> sci-kit-learn — scikit-learn is the correct name.

These are related to matplotlib and the same thing happens,

• binning -> bindings — "binning" is something related to matplotlib.
• colorbars -> color bars — Same thing here.
• basemap -> base map — Same thing.

Then you have also,

• strftime -> storytime — same issue
• timedelta -> time delta — same thing