Form: examples: incorrect usage of `fieldId` property in example code

[KKoukiou]

In https://www.patternfly.org/v4/components/form/#horizontal-stacked-helper-text-on-top for example the fieldId is set to options, the latter Id does not exist.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[KKoukiou]

Still wrong.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[KKoukiou]

Still wrong.