Until now, the listings of all kinds of modules looked quite
inconsistent like this:
- salt.states.smtp
- salt.states.snapper module
- salt.states.solrcloud module
- salt.states.splunk
The `module` suffix is redundant anyways, so let's remove it and do some
further cleanup (adjusting overline/underline usage, underline length)
using the following bash script:
```bash
sed -i 's|\s\+module$||g' doc/ref/*/all/*.*.rst
for rst in doc/ref/*/all/*.*.rst;
do
# enforce consistent overline/underline usage, remove all overlines
if [[ $(head -n1 "${rst}") =~ ^=+$ ]];
then
sed -i -e 1d "${rst}"
fi
# adjust the length of the underline to the length of the module name
module_name=$(head -n1 "${rst}")
underline=$(for i in $(seq ${#module_name}); do echo -n "="; done)
sed -i '2s|^=\+$|'"${underline}"'|g' "${rst}"
done
```
Also added an index.rst file for executors, renamed the
azurearm.rst file (Was misspelled with "azureare"), and
removed the xbps-pkg.rst file since that is an invalid
reference.
