Documentation/CodingStyle: fix tab-spaces mixture

Coding style description has a irregular mixture of tabs and spaces in two
places which is bad by any means and can possibly hurt somebody's sense
of beauty.

Signed-off-by: Pavel Kretov <[e-mail]>
Signed-off-by: Jonathan Corbet <[e-mail]>

Documentation/CodingStyle

···
 Anyway, here goes:
 
 
-	 	Chapter 1: Indentation
+		Chapter 1: Indentation
 
 Tabs are 8 characters, and thus indentations are also 8 characters.
 There are heretic movements that try to make indentations 4 (or even 2!)
···
 (defun c-lineup-arglist-tabs-only (ignored)
   "Line up argument lists by tabs, not spaces"
   (let* ((anchor (c-langelem-pos c-syntactic-element))
-	 (column (c-langelem-2nd-pos c-syntactic-element))
-	 (offset (- (1+ column) anchor))
-	 (steps (floor offset c-basic-offset)))
+         (column (c-langelem-2nd-pos c-syntactic-element))
+         (offset (- (1+ column) anchor))
+         (steps (floor offset c-basic-offset)))
     (* (max steps 1)
        c-basic-offset)))