Replace dead urls with active urls for Mutt

This patch replace stale/dead urls with active urls for Mutt.

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/process/email-clients.rst b/Documentation/process/email-clients.rst
index 5273d06..c9e4ce2 100644
--- a/Documentation/process/email-clients.rst
+++ b/Documentation/process/email-clients.rst
@@ -237,9 +237,9 @@
 
 The Mutt docs have lots more information:
 
-    http://dev.mutt.org/trac/wiki/UseCases/Gmail
+    https://gitlab.com/muttmua/mutt/-/wikis/UseCases/Gmail
 
-    http://dev.mutt.org/doc/manual.html
+    http://www.mutt.org/doc/manual/
 
 Pine (TUI)
 **********