[shape/BarGroupHorizontal] Remove unnecessary destructuring of props in demo code

[pajkicdj]

💥 Breaking Changes

• None, only updated string value.

🚀 Enhancements

• N/A

📝 Documentation

• No need to update any additional documentation

🐛 Bug Fix

• As a d3 first-timer and react long-timer, I was excited to dip my toes in with vx. I followed the demo code, however I was struck with an angry error screen:

After a bit of debugging I realized the issue lay with the demo code. The children fn parameter in the demo code was expecting an argument to destructure and then map over the resulting barGroups value. However in the BarGroupHorizontal component in vx/packages/vx-shape/src/shapes/BarGroupHorizontal.js on line 66 it was only ever being passed one argument of type array. Therefore, removing the unnecessary destructuring of barGroups resolved the issue.

🏠 Internal

• N/A

[hshoff]

Good catch! thanks for the PR.