Documentation: Fix a mispelt "probably" in SubmittingPatches.

Fix a typo in SubmittingPatches where "probably" was spelt "probabally".
Signed-off-by: NLinus Nilsson <lajnold@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Documentation/SubmittingPatches

@@ -122,7 +122,7 @@ then only post say 15 or so at a time and wait for review and integration.
 
 Check your patch for basic style violations, details of which can be
 found in Documentation/CodingStyle.  Failure to do so simply wastes
-the reviewers time and will get your patch rejected, probabally
+the reviewers time and will get your patch rejected, probably
 without even being read.
 
 At a minimum you should check your patches with the patch style