docs: Add missing code language Markdown decorator

dcalhoun · dcalhoun · commit 7082b8ea1eed · 2024-12-12T13:52:35.000-05:00
diff --git a/README.md b/README.md
@@ -78,7 +78,7 @@ index bda0e51..3014479 100644
 
 To build GutenbergKit for production run the following command in your terminal:
 
-```
+```bash
 make build
 ```
 
