Charts - fix broken tooltip examples for v5

[dlabrecq]

Need to fix two broken legend tooltip examples due to the Tooltip popper outputting a new div tag.

Working examples for reference:
https://www.patternfly.org/v4/charts/legends#legend-tooltips
https://www.patternfly.org/v4/charts/tooltips#legend

[dlabrecq]

Reopening...

Although the example is working, I'm seeing some errors in the browser console. I believe this is due to ChartLabel outputting a tspan tag in the foreignObject element.

tspan error

text error