https link to EditorConfig.org (#25267)

Summary:
HTTPS is good and this prevents a HTTP redirect

## Changelog

[Internal] [Fixed] - https link to EditorConfig.org
Pull Request resolved: #25267

Differential Revision: D15873696

Pulled By: cpojer

fbshipit-source-id: 2d769fe163816c75d1461d09837ec9c06a929e04

.editorconfig

@@ -1,4 +1,4 @@
-# EditorConfig is awesome: http://EditorConfig.org
+# EditorConfig is awesome: https://EditorConfig.org
 
 # top-most EditorConfig file
 root = true