scripts: coccinelle: Fix description of badty.cocci

Summary was copy and pasted from array_size.cocci.
Signed-off-by: Michael Stefaniuc <mstefani@mykolab.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

scripts/coccinelle/misc/badty.cocci

-/// Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element
+/// Correct the size argument to alloc functions
 ///
 //# This makes an effort to find cases where the argument to sizeof is wrong
 //# in memory allocation functions by checking the type of the allocated memory