all: rename cveschema5 and cveschema to cve5 and cve4

Change-Id: I361574a534adbfdbbe052ed9d6b93b9ff0e01081
Reviewed-on: https://go-review.googlesource.com/c/vulndb/+/583657
Commit-Queue: Tatiana Bradley <tatianabradley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
diff --git a/all_test.go b/all_test.go
index ca2bb88..1ab5739 100644
--- a/all_test.go
+++ b/all_test.go
@@ -20,7 +20,7 @@
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"golang.org/x/vulndb/internal/cveschema5"
+	"golang.org/x/vulndb/internal/cve5"
 	"golang.org/x/vulndb/internal/osvutils"
 	"golang.org/x/vulndb/internal/proxy"
 	"golang.org/x/vulndb/internal/report"
@@ -135,12 +135,12 @@
 				}
 			}
 			if r.CVEMetadata != nil {
-				generated, err := cveschema5.FromReport(r)
+				generated, err := cve5.FromReport(r)
 				if err != nil {
 					t.Fatal(err)
 				}
 				cvePath := r.CVEFilename()
-				current, err := cveschema5.Read(cvePath)
+				current, err := cve5.Read(cvePath)
 				if err != nil {
 					t.Fatal(err)
 				}