remove hardcoded stdlib path

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

cmd/dagger/cmd/common/common.go

@@ -12,6 +12,7 @@ import (
 	"go.dagger.io/dagger/client"
 	"go.dagger.io/dagger/compiler"
 	"go.dagger.io/dagger/state"
+	"go.dagger.io/dagger/stdlib"
 )
 
 func CurrentProject(ctx context.Context) *state.Project {
@@ -90,7 +91,7 @@ func FormatValue(val *compiler.Value) string {
 	}
 
 	if val.LookupPath(cue.MakePath(
-		cue.Hid("_secret", "alpha.dagger.io/dagger"),
+		cue.Hid("_secret", stdlib.PackageName),
 		cue.Str("id"),
 	)).Exists() {
 		return "dagger.#Secret"

cmd/dagger/cmd/doc.go

@@ -346,7 +346,7 @@ func walkStdlib(ctx context.Context, output, format string) {
 			return nil
 		}
 
-		pkgName := fmt.Sprintf("alpha.dagger.io/%s", p)
+		pkgName := fmt.Sprintf("%s/%s", stdlib.ModuleName, p)
 		lg.Info().Str("package", pkgName).Str("format", format).Msg("generating doc")
 		val, err := loadCode(pkgName)
 		if err != nil {