Update 2021-09-09-Inputs.md

[pcar75]

Correction and clarity improvement
Ref. Discussion / KB : Multiple Inputs correction #3771

Short description of changes

Corrected my post in Knowledge Base.
Modified a bullet and improved the text for clarity about multiple inputs vs Jamulus 2 inputs..

Context: Fixes an issue? Related issues

3 rd bullet correction : generally these mixers only send mixed-down audio on both their analog and digital output.
restructured 1 paragraph in 2 , at begining and end.
The update was discussed in "KB : Multiple Inputs correction #3771" (https://github.com/orgs/jamulussoftware/discussions/3771)

Status of this Pull Request

Should be ready

What is missing until this pull request can be merged?

Does not need testing.

Does this need translation?
No. KB do not have translation.

Checklist

• I've verified that this Pull Request follows the general code principles
• I waited some time after this Pull Request was opened and all GitHub checks completed without errors.
• I'm sure that this Pull Request goes to the correct branch
  Should go to release, I believe ...

[ann0see]

Thanks!

[pcar75]

Bonjour ann0see / maintainers,
I do not understand the error or their messages from the process. I would not know if and what I could do to resolve it. ... maybe check the "I'm sure that this Pull Request goes to the correct branch" checkbox !?