Make main module doc optional when in recursive generation

Signed-off-by: Khosrow Moossavi <khos2ow@gmail.com>

examples/.terraform-docs.yml

@@ -14,6 +14,7 @@ footer-from: footer.md
 # recursive:
 #   enabled: false
 #   path: modules
+#   include-main: false
 
 # see: https://terraform-docs.io/user-guide/configuration/sections
 sections:

internal/cli/run.go

@@ -97,7 +97,7 @@ type module struct {
 func (r *Runtime) RunEFunc(cmd *cobra.Command, args []string) error { //nolint:gocyclo
 	modules := []module{}
 
-	if r.config.Recursive.IncludeMain {
+	if !r.config.Recursive.Enabled || r.config.Recursive.IncludeMain {
 		modules = append(modules, module{r.rootDir, r.config})
 	}