[Skiboot] [PATCH] README.md: Update reference to linux SubmittingPatches

[Cyril Bur]

The wise linux gods went an moved the content. May as well point to the
actual content.

Signed-off-by: Cyril Bur <cyril.bur at au1.ibm.com>
---
 README.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 20898fc9..9266be01 100644
--- a/README.md
+++ b/README.md
@@ -100,8 +100,9 @@ git commit -s
 git format-patch
 ```
 
-You probably want to read the linux Documentation/SubmittingPatches as
-much of it applies to skiboot.
+You probably want to read the linux
+Documentation/process/submitting-patches.rst as much of it applies to
+skiboot.
 
 ## License
 
-- 
2.11.0