diff --git a/doc/modules/gpt.md b/doc/modules/gpt.md
index fbe387c52..4b246485d 100644
--- a/doc/modules/gpt.md
+++ b/doc/modules/gpt.md
@@ -18,7 +18,7 @@ For detailed information about this plugin, refer to the [blog post](https://rsp
 
 ## Configuration Options
 
-```ini
+```hcl
 gpt {
   # Supported type: openai
   type = "openai";