style: Convert tabs to spaces across Emacs config

lisp/init-prog.el

@@ -1,4 +1,4 @@
-;;; init-prog.el --- programming  -*- lexical-binding: t -*-
+;;; init-prog.el --- programming -*- lexical-binding: t -*-
 
 ;;; Commentary:
 
@@ -62,7 +62,7 @@
   (markdown-mode . visual-line-mode)
   :init
   (setq markdown-command "multimarkdown"
-	markdown-fontify-code-blocks-natively t))
+        markdown-fontify-code-blocks-natively t))
 
 (use-package edit-indirect)