Add "Windwheel Aster" route video

Author: Tibowl

src/data/guides.json

@@ -34,6 +34,7 @@
         "name": "Windwheel Aster route",
         "desc": "**Windwheel Asters ${Windwheel Aster}** can be found in the wilderness of Mondstadt and are being sold by [**Flora**](https://cdn.discordapp.com/attachments/923194392959918090/923316038328778823/Flora.png) (up to 5 per 3 days).\n\n> A plant that adores the wind. To the proud children of the wind, or the citizens of Mondstadt, the Windwheel Asters are \"the visible winds.\"",
         "img": "https://cdn.discordapp.com/attachments/923194392959918090/925716459391434772/Windwheel_Asters.png",
+        "url": "https://youtu.be/KDWFR2sAxfM",
         "credits": "Yukie",
         "links": {
           "material": ["Windwheel Aster"]