Update sites

Author: evadecker

src/channels/01-games.yml

@@ -371,6 +371,8 @@ schedule:
     - "15:00":
     - "15:30":
     - "16:00":
+        title: 368 Chickens
+        url: https://368chickens.com/
     - "16:30":
     - "17:00":
     - "17:30":

src/channels/06-single-use.yml

@@ -383,9 +383,6 @@ schedule:
     - "13:00":
     - "13:30":
     - "14:00":
-        title: Seventh Sanctum
-        author: Steven Savage
-        url: https://www.seventhsanctum.com/
     - "14:30":
     - "15:00":
     - "15:30":

src/channels/07-explorables.yml

@@ -410,6 +410,8 @@ schedule:
     - "19:00":
     - "19:30":
     - "20:00":
+        title: Gravity
+        url: https://lab.nationalmedals.org/gravity.php
     - "20:30":
     - "21:00":
     - "21:30":