Update README.md

README.md

@@ -184,7 +184,7 @@ If you want to report a bug or request a new feature, feel free to open a [new i
 ### Translations
 If you want to translate Uptime Kuma into your language, please visit [Weblate Readme](https://github.com/louislam/uptime-kuma/blob/master/src/lang/README.md).
 
-## Spelling & Grammar
+### Spelling & Grammar
 
 Feel free to correct the grammar in the documentation or code.
 My mother language is not english and my grammar is not that great.