fix: auto gen warning on example env and use correct cli flag in md gen

.env.example

@@ -1,3 +1,5 @@
+# This file is automatically generated by gen/gen_env.go. Do not edit manually.
+
 # Tinyauth example configuration
 
 # The base URL where the app is hosted.

gen/gen_env.go

@@ -106,6 +106,8 @@ func buildEnvChildPath(parent string, child string) string {
 
 func compileEnv(entries []EnvEntry) []byte {
 	buffer := bytes.Buffer{}
+
+	buffer.WriteString("# This file is automatically generated by gen/gen_env.go. Do not edit manually.\n\n")
 	buffer.WriteString("# Tinyauth example configuration\n\n")
 
 	previousSection := ""

gen/gen_md.go

@@ -56,7 +56,7 @@ func buildMdEntry(child reflect.StructField, childValue reflect.Value, parentPat
 
 	entry := MarkdownEntry{
 		Env:         strings.ToUpper(strings.ReplaceAll(parentPath, ".", "_")) + strings.ToUpper(child.Name),
-		Flag:        fmt.Sprintf("--%s%s", strings.TrimPrefix(parentPath, "tinyauth."), tag),
+		Flag:        fmt.Sprintf("--%s%s", strings.TrimPrefix(parentPath, "tinyauth."), strings.ToLower(child.Name)),
 		Description: desc,
 	}
 
@@ -104,6 +104,7 @@ func buildMdChildPath(parent string, child string) string {
 func compileMd(entries []MarkdownEntry) []byte {
 	buffer := bytes.Buffer{}
 
+	buffer.WriteString("<!--- This file is automatically generated by gen/gen_md.go. Do not edit manually. --->\n\n")
 	buffer.WriteString("# Tinyauth configuration reference\n\n")
 	buffer.WriteString("| Environment | Flag | Description | Default |\n")
 	buffer.WriteString("| - | - | - | - |\n")