Update readme.md

Author: timgit

docs/readme.md

@@ -99,6 +99,8 @@ If the CREATE privilege is not available or desired, you can use the included [s
 
 NOTE: Using an existing schema is supported for advanced use cases **but discouraged**, as this opens up the possibility that creation will fail on an object name collision, and it will add more steps to the uninstallation process.
 
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 # Database uninstall
 
 If you need to uninstall pg-boss from a database, just run the following command.