internal/scan: use summary if available

Prefer using the osv summary rather than the details if it has one.

Change-Id: Icebfabd0f17c04c84cfafe4ee5ca7c1704a7f3d5
Reviewed-on: https://go-review.googlesource.com/c/vuln/+/502940
Auto-Submit: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Zvonimir Pavlinovic <zpavlinovic@google.com>

internal/scan/text.go

@@ -172,7 +172,11 @@ func (h *TextHandler) vulnerability(index int, findings []*findingSummary) {
 	}
 	h.print("\n")
 	h.style(detailsStyle)
-	h.wrap("    ", findings[0].OSV.Details, 80)
+	description := findings[0].OSV.Summary
+	if description == "" {
+		description = findings[0].OSV.Details
+	}
+	h.wrap("    ", description, 80)
 	h.style(defaultStyle)
 	h.print("\n")
 	h.style(keyStyle, "  More info:")