Update git URLs on "Contributing" page

app/views/pages/contributing.html.slim

@@ -98,16 +98,20 @@
         help to improve the quality and functionality of asciinema for everyone.
 
     p
-      ' As the service is built of 2 parts there are 2 separate bug trackers:
+      ' As the service is built of several parts there are separate bug trackers:
 
       ul
         li
-          a href="https://github.com/sickill/asciinema.org/issues" github.com/sickill/asciinema.org/issues
-          '  - issues and ideas for the website / embedded player,
+          a href="https://github.com/asciinema/asciinema-cli/issues" github.com/asciinema/asciinema-cli/issues
+          '  - issues and ideas for the command line recorder,
 
         li
-          a href="https://github.com/sickill/asciinema/issues" github.com/sickill/asciinema/issues
-          '  - issues and ideas for the command line recorder.
+          a href="https://github.com/asciinema/asciinema.org/issues" github.com/asciinema/asciinema.org/issues
+          '  - issues and ideas for the website,
+
+        li
+          a href="https://github.com/asciinema/asciinema-player/issues" github.com/asciinema/asciinema-player/issues
+          '  - issues and ideas for the javascript player.
 
     h2 id="spreading" Spreading the word