doc: Add terms to concept index for "guix style".

* doc/guix.texi (Invoking guix style): Add terms to concept index.

1 files changed, 4 insertions, 0 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index 8d6e96ab2d..523711bdf6 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -14118,6 +14118,10 @@ otherwise.
 @section Invoking @command{guix style}
 
 @cindex @command{guix style}
+@cindex styling rules
+@cindex lint, code style
+@cindex format, code style
+@cindex format conventions
 The @command{guix style} command helps users and packagers alike style
 their package definitions and configuration files according to the
 latest fashionable trends.  It can either reformat whole files, with the