Correct name for Ruby blog post (#9875)

cspell.json

@@ -192,6 +192,7 @@
         "Kassens",
         "Kasturi",
         "kddeisz",
+        "kddnewton",
         "Kearney",
         "keyof",
         "Khatri",

website/blog/2020-12-11-plugin-ruby-1.0.md

@@ -1,6 +1,6 @@
 ---
-author: Kevin Deisz (@kddeisz)
-authorURL: https://twitter.com/kddeisz
+author: Kevin Newton (@kddnewton)
+authorURL: https://twitter.com/kddnewton
 title: Prettier for Ruby goes v1.0 🎉
 ---