Documentation: clarify quoting in "git add" example

diff --git a/Documentation/install-webdoc.sh b/Documentation/install-webdoc.sh
index 2135a8ee1f4f56a8c799437949ba76d7526164c0..34d02a24188921ebac1b70f7cf0c6517a45e8fb1 100755 (executable)
--- a/Documentation/install-webdoc.sh
+++ b/Documentation/install-webdoc.sh
@@ -12,7 +12,7 @@ do
        then
                : did not match
        elif test -f "$T/$h" &&
-          diff -u -I'Last updated [0-9][0-9]-[A-Z][a-z][a-z]-' "$T/$h" "$h"
+          $DIFF -u -I'Last updated [0-9][0-9]-[A-Z][a-z][a-z]-' "$T/$h" "$h"
        then
                :; # up to date
        else