fix: wrong flag type

jonyhy96 · jonyhy96 · commit 933ddaa6f870 · 2021-09-29T16:22:51.000+08:00
Signed-off-by: jonyhy &lt;yun.hao@daocloud.io&gt;
diff --git a/cmd/ctr/commands/images/import.go b/cmd/ctr/commands/images/import.go
@@ -73,7 +73,7 @@ If foobar.tar contains an OCI ref named "latest" and anonymous ref "sha256:deadb
 			Name:  "all-platforms",
 			Usage: "imports content for all platforms, false by default",
 		},
-		cli.BoolFlag{
+		cli.StringFlag{
 			Name:  "platform",
 			Usage: "imports content for specific platform",
 		},
