resources: Update 'riscv-lupio-busybox-img' description

This patch updates the fixes the incorrect description for the
'riscv-lupio-busybox-img' LupV disk image resources. The patch removed
reference to a non-existence "LupioBoard" (it's the "Lupvboard"), and
fixes the incorrect statement that it must be used with the
'riscv-lupio-busybox-img' resource (it must be used with the
'riscv-lupio-linux-kernel' resource).

Change-Id: Iebb2f04a110a20d835d9c8b6820da6fb6ae2cb3f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-resources/+/56570
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby Bruce <bbruce@ucdavis.edu>
diff --git a/resources.json b/resources.json
index 5826df5..f560b96 100644
--- a/resources.json
+++ b/resources.json
@@ -22,7 +22,7 @@
         {
             "type": "resource",
             "name" : "riscv-lupio-busybox-img",
-            "documentation" : "A RISCV disk image, based on busybox, to be used with the LupioBoard. Should be used with the 'riscv-lupio-busybox-img' kernel resource.",
+            "documentation" : "A RISCV disk image, based on busybox, to be used with the LupvBoard. Should be used with the 'riscv-lupio-linux-kernel' kernel resource.",
             "architecture": "RISCV",
             "is_zipped" : true,
             "md5sum" : "e5bee8a31f45f4803f87c0d781553ccc",