adding nebula and thumb

Author: shiffman

content/videos/challenges/179-wolfram-ca/index.json

@@ -1,9 +1,9 @@
 {
   "title": "Wolfram CA",
   "videoNumber": "179",
-  "description": "",
+  "description": "How is nature hidden in a pile of 0s and 1s? Let's find out by coding a p5.js visualization of the Wolfram Elementary Cellular Automaton!",
   "videoId": "Ggxt06qSAe4",
-  "nebulaSlug": "",
+  "nebulaSlug": "https://nebula.tv/videos/codingtrain-wolfram-elementary-ca",
   "date": "2023-01-09",
   "languages": ["p5.js", "JavaScript"],
   "topics": ["nature of code", "wolfram", "ca", "cellular automata", "binary to decimal conversion", "Sierpinski triangle"],
@@ -13,7 +13,7 @@
     { "time": "0:00", "title": "Hello!" },
     { "time": "2:09", "title": "What is an elementary cellular automata?" },
     { "time": "5:41", "title": "Explaining the rulesets" },
-    { "time": "7:52", "title": "Caluclating the next generation." },
+    { "time": "7:52", "title": "Calculating the next generation." },
     { "time": "10:35", "title": "Visualizing the CA" },
     { "time": "14:25", "title": "Rule 90" },
     { "time": "16:45", "title": "Wolfram Classification." },