perl: Improve CONFIG_PERL_TESTS help text

Signed-off-by: Marcel Denia <naoir@gmx.net>

lang/perl/Config.in

 	default n
 	help
 		Include test suites for all perl packages.
-		This will make perl related packages much bigger, so
-		use with care.
 		
-		Note: Test support is still in development. Some tests
-		still fail, others are just missing completely.
+		This will increase the size of perl and related packages
+		considerably.
+		Test support is still in development. Some tests will fail,
+		others are just missing completely.
 
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