[x] I have added to CHANGELOG.md relevant changes and any other user facing change
Nothing added to the changelog.
[x] I have added or ran the appropriate tests
The documentation was succsessfully built with mix docs in the dev env.
What this PR does / why we need it:
The documentation of Astarte 1.1 was showing a warning stating that it was an unstable version. That was both wrong and misleading. Remove that statement.
mix docsin the dev env.What this PR does / why we need it:
The documentation of Astarte 1.1 was showing a warning stating that it was an unstable version. That was both wrong and misleading. Remove that statement.
Does this PR introduce a user-facing change?