[bug#36631] [PATCH] doc: note how to install git send-email

[Arne Babenhauserheide]

* doc/contributing.texi (git send-email): Add install instructions.
---
 doc/contributing.texi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/contributing.texi b/doc/contributing.texi
index e00634eed4..7f2301409a 100644
--- a/doc/contributing.texi
+++ b/doc/contributing.texi
@@ -982,5 +982,6 @@ first send one message to @email{guix-patches@@gnu.org}, 
and then send
 subsequent patches to @email{@var{NNN}@@debbugs.gnu.org} to make sure
 they are kept together.  See
 @uref{https://debbugs.gnu.org/Advanced.html, the Debbugs documentation}
-for more information.
+for more information.  You can install @command{git send-email} with
+@command{guix install git:send-email}.
 @c Debbugs bug: https://debbugs.gnu.org/db/15/15361.html
--
2.22.0