feat: gen markdown docs for command

docs/doc_test.go

@@ -0,0 +1,18 @@
+package cmd
+
+import (
+	"log"
+	"testing"
+
+	"github.com/spf13/cobra/doc"
+
+	"github.com/httprunner/httpboomer/httpboomer/cmd"
+)
+
+// run this test to generate markdown docs
+func TestGenMarkdownTree(t *testing.T) {
+	err := doc.GenMarkdownTree(cmd.RootCmd, "./cmd/")
+	if err != nil {
+		log.Fatal(err)
+	}
+}