Merge pull request #5597 from perseghini/patch-1

Fixing step 3 in the Heroku deployement instructions.

docs/operations-guide/running-metabase-on-heroku.md

@@ -58,7 +58,7 @@ git remote add heroku https://git.heroku.com/your-metabase-app.git
 
 * If you are upgrading from a version that is lower than 0.25, add the Metabase buildpack to your Heroku app:
 ```
-heroku buildpacks:add https://github.com/metabase/metabase-heroku
+heroku buildpacks:add https://github.com/metabase/metabase-buildpack
 ```
 
 * Force push the new version to Heroku: