fix(md-preview): update hash (#388)

Author: dancormier

scripts/definitions.ts

@@ -224,7 +224,7 @@ const figmaIconDefinitions: Record<string, string> = {
     "Icon/MailOpenSm": "t1u9oAH1rs1hLvI/JFqxHdjD6QqD84psulbQIv4L5BM=",
     "Icon/MailSm": "dI3HGJ3sJKRz6quN4VUEvvapMEW/ZdI6jQS1ZkS6VAA=",
     "Icon/Markdown": "IIIKeolHRkcIe6yb62bPvdIWZiIE3f9lsA25QQNU3Bg=",
-    "Icon/MarkdownPreview": "Dd4+T1OCD+vzeODYrOrMg34g1mvmm/secUVAta8OmHA=",
+    "Icon/MarkdownPreview": "21PRSrb+ja5ZF49uwe3wRPN9vyJYqpdrvQwFCej9hmI=",
     "Icon/Medal": "X5M/0OEfdIPYz9HTFIN4v9HfeC8U+C3+KbBeBunogyA=",
     "Icon/Merge": "5xpK7jJNZD/hVQVJxShfX77OHmdCM0TXWmr2TLDq/1w=",
     "Icon/Message": "YbfqOtrtglfGPLUU2rhhvMSiYJp6gdYHt9M73QHYZto=",