Fix comments.

demos/cms/cms_dec.c

-/* Simple S/MIME signing example */
+/* Simple S/MIME decryption example */
 #include <openssl/pem.h>
 #include <openssl/cms.h>
 #include <openssl/err.h>
@@ -77,7 +77,3 @@ int main(int argc, char **argv)
 	return ret;
 
 	}
-
-
-
-

demos/cms/cms_sign2.c

-/* S/MIME signing example: 2 signers. OpenSSL 0.9.9 only */
+/* S/MIME signing example: 2 signers */
 #include <openssl/pem.h>
 #include <openssl/cms.h>
 #include <openssl/err.h>
@@ -101,7 +101,3 @@ int main(int argc, char **argv)
 	return ret;
 
 	}
-
-
-
-