Coccinelle: use false positive annotation

/// is to describe the semantic patch, while //# indicates reasons
for false positives.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

scripts/coccinelle/misc/ifcol.cocci

@@ -3,10 +3,10 @@
 /// Sometimes, code after an if that is indented is actually intended to be
 /// part of the if branch.
 ///
-/// This has a high rate of false positives, because Coccinelle's column
-/// calculation does not distinguish between spaces and tabs, so code that
-/// is not visually aligned may be considered to be in the same column.
-///
+//# This has a high rate of false positives, because Coccinelle's column
+//# calculation does not distinguish between spaces and tabs, so code that
+//# is not visually aligned may be considered to be in the same column.
+//
 // Confidence: Low
 // Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
 // Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.