Document `composer symfony:sync-recipe --force`

[lyrixx]

Yesterday I tweeted that:

I updated my workflow demo to Symfony 5.0
Basically I ran composer up + composer symfony:sync-recipe --force + git add -p and it worked ✅

and many people told me they did not know --force option. So I said it's documented but ... no 😬 (I trust a lot the doc team 💛 ). There is a blog post about it, but I think we can do better.

And I think a migration guide could be nice to help people migrating their app

/ cc @Pierstoval since you are the author of this feature

[maxhelias]

There is also a Flex RFC that raises the point symfony/flex#518

[maxhelias]

With the new command composer recipes, we recommend to use it.
Also I add a new section here #13320

[carsonbot]

Thank you for this issue.
There has not been a lot of activity here for a while. Has this been resolved?

[carsonbot]

Friendly reminder that this issue exists. If I don't hear anything I'll close this.