Fix lint errors caught by go test

Test: m checkbuild
Change-Id: I5b8522aa9da22fc595e4f26c23e7836de59bdfa2
diff --git a/cmd/pom2bp/pom2bp.go b/cmd/pom2bp/pom2bp.go
index 9aa25f0..9ce6b50 100644
--- a/cmd/pom2bp/pom2bp.go
+++ b/cmd/pom2bp/pom2bp.go
@@ -524,7 +524,7 @@
 		if pom.IsAar() {
 			err := pom.ExtractMinSdkVersion()
 			if err != nil {
-				fmt.Fprintln(os.Stderr, "Error reading manifest for %s: %s", pom.ArtifactFile, err)
+				fmt.Fprintf(os.Stderr, "Error reading manifest for %s: %s", pom.ArtifactFile, err)
 				os.Exit(1)
 			}
 		}