Chore - Chart - Clean up tooltip examples

[dlabrecq]

I discovered a couple issues with the chart examples, which I'd like to clean up.

Tooltip embedded HTML: https://www.patternfly.org/charts/tooltips/#embedded-html

• The offset and flyout component are not necessary here
• ChartPoint should be encapsulated wit a rect tag
• flyout property should be flyoutComponent

Boxplot embedded legend: https://www.patternfly.org/charts/box-plot-chart#embedded-legend

• boxPlotData property does not exist
• This can be modified to better show all box plot properties by wrapping lines in the legend tooltip