planning/tpac-2018: [Adding link to Apple color filter]

Author: FremyCompany

planning/tpac-2018.txt

@@ -160,7 +160,7 @@ See also the current https://www.w3.org/2002/09/wbs/35125/TPAC2018/registrants [
 3:30pm - break
 
   * Scrollbar Styling - FPWD, experimental implementation(s), and maybe even demo(s)?
-  * Apple's color-filter proposal (status gathering)—fremy
+  * [[https://github.com/w3c/csswg-drafts/issues/2875 | Apple's color-filter proposal]] (status gathering)—fremy
   * Effect of filter element on root element https://github.com/w3c/fxtf-drafts/issues/282 --chrishtr
   * backdrop-filter spec issues: https://github.com/w3c/fxtf-drafts/issues/53