Update the unit symbols

[getsnoopy]

The ad-hoc abbreviation "Mbps" for "megabits per second" was used originally to refer to the unit since an official symbol did not exist at the time. An official symbol now exists and the abbreviation has been deprecated, so this commit updates these to the official symbol.

[adolfintel]

Nice, I didn't know there was an official symbol. Your PR makes a bit of a mess in the markdown files, can you fix that?

[getsnoopy]

Are you referring to the trailing whitespaces being removed? I think that's automatic, which is good since they shouldn't exist anyway.

[adolfintel]

Yes, the spaces have nothing to do with your correction. You should make a second commit for that

[getsnoopy]

Done.

[getsnoopy]

Does the PR look good to you? Let's merge it in if so.

[adolfintel]

Yes, it's good. I will merge it when I get around to do the same thing for the Android version

[denilsonsa]

Whenever you merge it, you may consider also adding and updating this commit: https://github.com/denilsonsa/speedtest/commit/a3f127e56e9f19b7fcd411122437e1cd857dedc4

[getsnoopy]

@adolfintel Fixed the merge conflicts. @denilsonsa It looks like your commit is not merged in yet, so it would be better for you to fix the Mbps to Mbit/s in your commit and then do a separate pull request.

[sstidl]

I will look at this. Seems to be a simple find & replace in the repo.

[denilsonsa]

@sstidl Feel free to look and incorporate at any pending commits from my branch. It's been 2½ years since I wrote them, and I haven't used librespeed myself in quite some time.

[sstidl]

solved by #581