Fix Quickblocker being broken by 4chan X update

The 4chan X v3.19.0 update changed the filter button element, breaking Quickblocker.

Only use this fork if you have these 4chan X versions as a minimum requirement:

v3.19.0 (Mayhem)
v3.12.1 (ihavenoface)

Added a breakspace character before the element to prevent a wrapping error with the new 4chan X filter button