chore: clean up docs a11y violations

[nicolethoen]

What: Closes #7581

Cleans up duplicate ids and labels, as well as proper heading levels across the following docs:

• Tile react demos
• Masthead react demos
• Card react demos
• Grid layout examples
• Wizard examples
• Toolbar examples
• Tabs examples

[patternfly-build]

Preview: https://patternfly-react-pr-7582.surge.sh

A11y report: https://patternfly-react-pr-7582-a11y.surge.sh

[patternfly-build]

Your changes have been released in:

• eslint-plugin-patternfly-react@4.63.7
• @patternfly/react-catalog-view-extension@4.75.7
• @patternfly/react-charts@6.77.7
• @patternfly/react-code-editor@4.65.7
• @patternfly/react-console@4.75.7
• @patternfly/react-core@4.224.7
• @patternfly/react-docs@5.85.7
• @patternfly/react-icons@4.75.7
• @patternfly/react-inline-edit-extension@4.69.7
• demo-app-ts@4.184.7
• @patternfly/react-integration@4.186.7
• @patternfly/react-log-viewer@4.69.7
• @patternfly/react-styles@4.74.7
• @patternfly/react-table@4.93.7
• @patternfly/react-tokens@4.76.7
• @patternfly/react-topology@4.71.7
• @patternfly/react-virtualized-extension@4.71.7
• transformer-cjs-imports@4.62.7

Thanks for your contribution! 🎉