diff --git a/grammars/README.md b/grammars/README.md
index 293b8e4b4..9e42fe155 100644
--- a/grammars/README.md
+++ b/grammars/README.md
@@ -218,7 +218,7 @@ class QAPair(BaseModel):
 
 class Summary(BaseModel):
     class Config:
-        extra = 'forbid' 
+        extra = 'forbid'
     key_facts: List[Annotated[str, Field(pattern='- .{5,}')]]
     question_answers: List[Annotated[List[QAPair], Field(min_items=5)]]