main: fix small typo

A local container image from the host is being used.

bib/cmd/bootc-image-builder/image.go

@@ -40,7 +40,7 @@ type ManifestConfig struct {
 	// TLSVerify specifies whether HTTPS and a valid TLS certificate are required
 	TLSVerify bool
 
-	// Use a local container from the host rather than a repository
+	// Use a local container image from the host storage rather than a repository
 	Local bool
 }