[Pharo 7.0-dev] Build #945: Add a notice about how to contribute using Iceberg 0.7.3

There is a new Pharo build available!
       
The status of the build #945 was: FAILURE.

The Pull Request #1412 was integrated: "Add a notice about how to contribute using Iceberg 0.7.3"
Pull request url: https://github.com/pharo-project/pharo/pull/1412

Issue Url: https://pharo.fogbugz.com/f/cases/development
Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20and%20branch%20Pipeline/job/development/945/