Fix docker readme
The updated command didn't work for me.  Also, changing to -t instead of -i allows colorful output.
@@ -72,7 +72,7 @@ Start using Checkov by reading the [Getting Started](docs/1.Introduction/Getting
```sh
docker pull bridgecrew/checkov
-docker run -v /user/tf:/tf bridgecrew/checkov -i -d /tf
+docker run -t -v /user/tf:/tf bridgecrew/checkov -d /tf
```
### Suppressing/Ignoring a check
Like any static-analysis tool it is limited by its analysis scope.
