Fix header rendering in Sphinx
Fix header rendering in Sphinx

Before it rendered somewhat like this at
https://salt.readthedocs.org/en/latest/ref/states/all/index.html:

```
saltmod<tab>The Salt state is used to control the salt command interface. This state is<empty>
```

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt