fix misprint `lowvsyslog`

src/modules/systemlib/err.c

@@ -86,7 +86,7 @@ warnerr_core(int errcode, const char *fmt, va_list args)
 	fprintf(stderr, "\n");
 #elif CONFIG_ARCH_LOWPUTC
 	lowsyslog("%s: ", getprogname());
-	lowvyslog(fmt, args);
+	lowvsyslog(fmt, args);
 
 	/* convenience as many parts of NuttX use negative errno */
 	if (errcode < 0)