docs: fix missing `async` in example

Close #740.

diff --git a/docs/advanced/pool.rst b/docs/advanced/pool.rst
index e62c292b42eb07b76efa37fb85a73cbaea8888e3..74fa4e3d29e3dd0d41ecc75d75d151fb0635bab7 100644 (file)
--- a/docs/advanced/pool.rst
+++ b/docs/advanced/pool.rst
@@ -59,7 +59,7 @@ the methods requiring them::
         async with pool.connection() as conn:
             await conn.execute("SELECT something FROM somewhere ...")
 
-            with conn.cursor() as cur:
+            async with conn.cursor() as cur:
                 await cur.execute("SELECT something else...")