package/multicat: use double quotes in toolchain comment

To be consistent with the rest of Buildroot.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/multicat/Config.in

@@ -7,5 +7,5 @@ config BR2_PACKAGE_MULTICAT
 
 	  http://www.videolan.org/projects/multicat.html
 
-comment 'multicat needs a toolchain w/ threads'
+comment "multicat needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS