Update README.md

Author: chriddyp

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 [plotly.py](https://plot.ly/d3-js-for-python-and-pandas-charts/) is an interactive, browser-based graphing library for Python :sparkles:
 
-Built on top of [plotly.js](https://github.com/plotly/plotly.js), `plotly.py` is a high-level, declarative charting library. plotly.js ships with over 30 chart types, including scientific charts, 3D graphs, statistical charts, SVG maps, financial charts, and more. 
+Built on top of [plotly.js](https://github.com/plotly/plotly.js), `plotly.py` is a high-level, declarative charting library. plotly.js ships with over 30 chart types, including scientific charts, 3D graphs, statistical charts, SVG maps, financial charts, and more.
 
 `plotly.py` is [MIT Licensed](LICENSE.txt). Plotly graphs can be viewed in Jupyter notebooks, standalone HTML files, or hosted online on [plot.ly](https://plot.ly).