Fix procline for new Supervisor subclasses

`solid-queue-fork-supervisor` vs. `solid-queue-forksupervisor`.

Author: rosa

lib/solid_queue/processes/procline.rb

@@ -5,7 +5,7 @@ module Procline
     # Sets the procline ($0)
     # solid-queue-supervisor(0.1.0): <string>
     def procline(string)
-      $0 = "solid-queue-#{self.class.name.demodulize.downcase}(#{SolidQueue::VERSION}): #{string}"
+      $0 = "solid-queue-#{self.class.name.demodulize.underscore.dasherize}(#{SolidQueue::VERSION}): #{string}"
     end
   end
 end