Update migration doc

Author: Nicolas Rodriguez

Diff for: howtos/migrate/index.md

@@ -34,7 +34,7 @@ When you are in **v0.7.10**, you first need to launch this Rake task to delete S
     redmine$ bundle exec rake redmine_git_hosting:prepare_migration_to_v1 RAILS_ENV=production
 
 
-Then you can switch to the **v1.0.0** branch and launch the migration task :
+Then you can switch to the **1.0.2** version and launch the migration task :
 
     # Update Redmine Gitolite Hosting
     redmine$ cd REDMINE_ROOT/plugins/redmine_git_hosting