[elpa] externals/autocrypt fe5a358566 85/94: Add missing `-hook` suffix in readme hook name

[ELPA Syncer]

branch: externals/autocrypt
commit fe5a35856604effb2025496351ce247ba3540b1e
Author: Michael Eliachevitch <m.eliachevitch@posteo.de>
Commit: Philip Kaludercic <philipk@posteo.net>

    Add missing `-hook` suffix in readme hook name
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 072b9d05db..57ea0b92f2 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ inject headers using `message-mode` as follows:
 
 ~~~elisp
 (add-hook 'rmail-mode-hook #'autocrypt-mode)
-(add-hook 'message-mode #'autocrypt-mode)
+(add-hook 'message-mode-hook #'autocrypt-mode)
 ~~~
 
 alternatively, using [`setup`][setup]: