Replace tabbed indentation in sdk.md

Tabs and spaces were mixed in the example code which didn't indent cleanly in the github preview.

Signed-off-by: Adam Sven Johnson <[email protected]>

docs/sdk.md

@@ -28,8 +28,8 @@ import (
     "context"
     "log"
 
-	"github.com/docker/cli/cli/command"
-	"github.com/docker/cli/cli/flags"
+    "github.com/docker/cli/cli/command"
+    "github.com/docker/cli/cli/flags"
     "github.com/docker/compose/v5/pkg/api"
     "github.com/docker/compose/v5/pkg/compose"
 )
@@ -37,15 +37,15 @@ import (
 func main() {
     ctx := context.Background()
 
-	dockerCLI, err := command.NewDockerCli()
-	if err != nil {
-		log.Fatalf("Failed to create docker CLI: %v", err)
-	}
-	err = dockerCLI.Initialize(&flags.ClientOptions{})
-	if err != nil {
-		log.Fatalf("Failed to initialize docker CLI: %v", err)
-	}
-	
+    dockerCLI, err := command.NewDockerCli()
+    if err != nil {
+        log.Fatalf("Failed to create docker CLI: %v", err)
+    }
+    err = dockerCLI.Initialize(&flags.ClientOptions{})
+    if err != nil {
+        log.Fatalf("Failed to initialize docker CLI: %v", err)
+    }
+
     // Create a new Compose service instance
     service, err := compose.NewComposeService(dockerCLI)
     if err != nil {