fix: Change discord contact method to email in music license

Author: worldwidepixel

LICENSE-MUSIC

@@ -8,6 +8,6 @@ You are authorised to use Joy, with a few restrictions. In short:
 - You may use this soundtrack under the fair use doctrine including but not limited to the following:
   - Using this soundtrack in videos or streams
 
-This music is not free, please contact WorldWidePixel for licensing, `worldwidepixel` on Discord.
+This music is not free, please contact WorldWidePixel for licensing at hello@worldwidepixel.ca.
 
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