Reference style guide entry

73a306b6 · sajolida · 104f9f7d · 73a306b6
Commit 73a306b6 authored May 30, 2018 by sajolida
--- a/wiki/src/contribute/how/documentation/style_guide.mdwn
+++ b/wiki/src/contribute/how/documentation/style_guide.mdwn
@@ -14,6 +14,8 @@
    - Tails 3.0 is based on Debian 9 (Stretch)
    - *Tails Installer* is available on Ubuntu 15.10 (Wily Werewolf) or later.

+<a id="digit_grouping"></a>
+
 - **digit grouping**

  Use a non-breaking thin space (HTML entity: `&#8239;`) or a space to separate