Remove hash rocket from refs

This PR cleans up a few more instances of rogue hash rockets in references arrays.
* Part of issue #3766
* See [RM #8776](https://dev.metasploit.com/redmine/issues/8776)

```
$ egrep -rn "'(URL|EDB|OSVDB|BID|ZDI|CVE|MSB|WPVDB)'\s*=>" modules/*
modules/auxiliary/gather/doliwamp_traversal_creds.rb:29:          ['URL'       => 'https://doliforge.org/tracker/?func=detail&aid=1212&group_id=144'],
modules/auxiliary/gather/doliwamp_traversal_creds.rb:30:          ['URL'       => 'https://github.com/Dolibarr/dolibarr/commit/8642e2027c840752c4357c4676af32fe342dc0cb']
modules/payloads/singles/linux/mipsbe/shell_reverse_tcp.rb:28:          'EDB' => '18226',
modules/payloads/singles/cmd/windows/reverse_powershell.rb:28:          'URL' => 'https://github.com/trustedsec/social-engineer-toolkit/blob/master/src/powershell/reverse.powershell',
```