gopls/internal/lsp/mod: highlight when there is no fix for vuln

Change-Id: If53455159b8578901ff728640e9c1ec671c61cdb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/451695
Reviewed-by: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
diff --git a/gopls/internal/lsp/mod/hover.go b/gopls/internal/lsp/mod/hover.go
index 547f252..520a029 100644
--- a/gopls/internal/lsp/mod/hover.go
+++ b/gopls/internal/lsp/mod/hover.go
@@ -179,13 +179,13 @@
 }
 
 func fixedVersionInfo(v *govulncheck.Vuln, modPath string) string {
-	fix := "No fix is available."
+	fix := "\n**No fix is available.**"
 	for _, m := range v.Modules {
 		if m.Path != modPath {
 			continue
 		}
 		if m.FixedVersion != "" {
-			fix = "Fixed in " + m.FixedVersion + "."
+			fix = "\nFixed in " + m.FixedVersion + "."
 		}
 		break
 	}