docs: improve docs coverage

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

docs/docs_test.go

@@ -0,0 +1,15 @@
+package docs_test
+
+import (
+	"testing"
+
+	"github.com/anuvu/zot/docs"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestDocs(t *testing.T) {
+	Convey("Read docs", t, func() {
+		s := docs.New()
+		So(s.ReadDoc(), ShouldNotBeEmpty)
+	})
+}