Documentation is out of date

The documentation page at https://flask-apispec.readthedocs.io/en/latest/ is very outdated. It indicates that the current version is 0.7.0 which was released in 2018. Since this is the first result on DuckDuckGo (second on Google) when searching for `flask-apispec` it should probably be updated to reflect the most recent version.

Start at the Read the Docs page linked in the issue and locate the repository source for the outdated version reference. Check the project's current release information, update the documentation to match it, and verify that the published page no longer reports version 0.7.0.

Written by the indexing model from the issue text.