Update RainbowSixSiegeBridge (#548)
Update RainbowSixSiegeBridge (#548)

* Fix non-working RainbowSixSiegeBridge

* Updated RainbowSixSiegeBridge to use API to fetch articles

* Fix RainbowSixSiegeBridge coding style

* RainbowSixSiegeBridge fix url coding style error

RSS-Bridge/rss-bridge,GregThib/rss-bridge,kranack/rss-bridge,teromene/rss-bridge,LogMANOriginal/rss-bridge,Riduidel/rss-bridge,Frenzie/rss-bridge,Frenzie/rss-bridge,ORelio/rss-bridge,teromene/rss-bridge,Riduidel/rss-bridge,simonbru/rss-bridge,simonbru/rss-bridge,kranack/rss-bridge,Riduidel/rss-bridge,kranack/rss-bridge,kranack/rss-bridge,LogMANOriginal/rss-bridge,sebsauvage/rss-bridge,ORelio/rss-bridge,ORelio/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge