Doc String -- Dictionary key of Gradient Argument -- update heat_map.py -- folium.plugins by krishna0125 · Pull Request #2096 · python-visualization/folium

In the docstring, the gradient dictionary keys are mentioned as integers, but I believe the backend code expects them to be strings. So, I changed the docstring to reflect this, from integer values (e.g., .8) to string values (e.g., ".8").