docs: note that status configuration affects only long format

The short format does not respect any of the usual status.*
configuration.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-status.txt

@@ -114,13 +114,13 @@ compatibility) and `color.status.<slot>` configuration variables
 to colorize its output.
 
 If the config variable `status.relativePaths` is set to false, then all
-paths shown are relative to the repository root, not to the current
-directory.
+paths shown in the long format are relative to the repository root, not
+to the current directory.
 
 If `status.submodulesummary` is set to a non zero number or true (identical
-to -1 or an unlimited number), the submodule summary will be enabled and a
-summary of commits for modified submodules will be shown (see --summary-limit
-option of linkgit:git-submodule[1]).
+to -1 or an unlimited number), the submodule summary will be enabled for
+the long format and a summary of commits for modified submodules will be
+shown (see --summary-limit option of linkgit:git-submodule[1]).
 
 SEE ALSO
 --------