Update dropdown guidance to state inline variant is available for both dropdown and multiselect

[tay1orjones]

The dropdown usage guidance states that inline is only a variant for dropdown, but multiselect actually does have an inline variant as discussed:

Discussed in carbon-design-system/carbon#10384

^{Originally posted by half5cat January 11, 2022}
The documentation states the following:

Note: Inline is only a modifier for dropdown and does not have filtering functionality.
(Source: https://www.carbondesignsystem.com/components/dropdown/usage#modifiers )

However, in the react components I found this example. There is no mention of an inline variant of the combobox, however. So, I would appreciate some clarification.

[tay1orjones]

This will be a pretty easy fix, we need to update documentation on the website but also add a min-width to match the dropdown. I think we'd just need to update the note on the website?

- > Note: Inline is only a modifier for dropdown and does not have filtering functionality.
+ > Note: Inline is only a modifier for Dropdown and MultiSelect and does not have filtering functionality.