fix(wpcarro/emacs): Ensure tab-width=2

- Set global tab-width
- Set golang-buffer-local tab-width

Change-Id: Ifa21f4e5a4c5e00d2355cd0dfecfb9b24597da57
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4549
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>

users/wpcarro/emacs/.emacs.d/wpc/wpc-misc.el

@@ -191,6 +191,9 @@
 ;; ensure code wraps at 80 characters by default
 (setq-default fill-column 80)
 
+;; render tabs 2x-chars wide
+(setq tab-width 2)
+
 (put 'narrow-to-region 'disabled nil)
 
 ;; trim whitespace on save