Update responses.md (#1080)

Small grammar correction.
encode · Oct 28, 2020 · 7a783d3 · 7a783d3
1 parent 5193cdb
commit 7a783d3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/responses.md b/docs/responses.md
@@ -66,7 +66,7 @@ async def app(scope, receive, send):
 
 ### PlainTextResponse
 
-Takes some text or bytes and returns an plain text response.
+Takes some text or bytes and returns a plain text response.
 
 ```python
 from starlette.responses import PlainTextResponse