[PATCH] rebase: Fix documentation about used shell in -x

[Nikolay Borisov <nik.borisov@suse.com>]

The shell used when using the -x option is the one pointed to by the
SHELL_PATH constant at build time. This erroneous statement in the
documentation sent me on a 10 minute wild goose chase wondering why my
$SHELL was pointing to /bin/bash and my /bin/sh to dash and git was
using dash and not bash.

Signed-off-by: Nikolay Borisov <nik.borisov@suse.com>
---
 Documentation/git-rebase.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 25516c45d8b8..08cf52daf39e 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -964,7 +964,7 @@ non-0 status) to give you an opportunity to fix the problem. You can
 continue with `git rebase --continue`.
 
 The "exec" command launches the command in a shell (the one specified
-in `$SHELL`, or the default shell if `$SHELL` is not set), so you can
+by the build-time SHELL_PATH variable, usually /bin/sh), so you can
 use shell features (like "cd", ">", ";" ...). The command is run from
 the root of the working tree.
 
-- 
2.34.1