Flutter doesn't follow semantic versioning

[ueman]

Description of what this PR is changing or adding, and why:

Change the note that Flutter follow semantic versioning, since Flutter doesn't follow semantic versioning.

See here

Issues fixed by this PR (if any):

PRs or commits this PR depends on (if any):

Presubmit checklist

• This PR is marked as draft with an explanation if not meant to land until a future stable release.
• This PR doesn’t contain automatically generated corrections (Grammarly or similar).
• This PR follows the Google Developer Documentation Style Guidelines — for example, it doesn’t use i.e. or e.g., and it avoids I and we (first person).
• This PR uses semantic line breaks of 80 characters or fewer.

[mit-mit]

Interesting, that line of text must have made it over when we clone the similar Dart text.

[mit-mit]

Can we align verbiage with, and link to, this page? https://github.com/flutter/flutter/blob/master/docs/releases/Release-versioning.md

[ueman]

Sure. Is there any preference how to link to the document? Permalink, non-permalink?

[sfshaza2]

A permanent link, @ueman. The actual link would be:

{{site.github}}/flutter/flutter/blob/main/docs/releases/Release-versioning.md

(In general, we use "main" links instead of "master".)

[sfshaza2]

@ueman, have we lost you? I can take care of this in another PR.

[ueman]

Sorry, I've been traveling a lot this month for work, so I didn't have much time to do something. I would really appreciate you taking this over.