Review extract version documentation (#1429)
Review extract version documentation (#1429)

* Review extract version documentation

The notes about returning None to force reading the version information
from the package metadata don't seem correct. From experience the
version always comes from the package metadata once it has been
exported.

* Review extract version documentation

The notes about returning None to force reading the version information
from the package metadata don't seem correct. From experience the
version always comes from the package metadata once it has been
exported.

conan-io/docs,conan-io/docs,conan-io/docs,conan-io/docs