Update Brush Interval Selector.ipynb
Update Brush Interval Selector.ipynb

updated typo
ChakriCherukuri/bqplot,bloomberg/bqplot,SylvainCorlay/bqplot,SylvainCorlay/bqplot,SylvainCorlay/bqplot,dmadeka/bqplot,ChakriCherukuri/bqplot,bloomberg/bqplot,bloomberg/bqplot,dmadeka/bqplot,ChakriCherukuri/bqplot