Fix doc for create_subprocess_exec (GH-12598)
Add missing `program` argument to asyncio.create_subprocess_exec documentation.
diff --git a/Doc/library/asyncio-subprocess.rst b/Doc/library/asyncio-subprocess.rst
index a2cf517..00dc66c 100644
--- a/Doc/library/asyncio-subprocess.rst
+++ b/Doc/library/asyncio-subprocess.rst
@@ -56,7 +56,7 @@
Creating Subprocesses
=====================
-.. coroutinefunction:: create_subprocess_exec(\*args, stdin=None, \
+.. coroutinefunction:: create_subprocess_exec(program, \*args, stdin=None, \
stdout=None, stderr=None, loop=None, \
limit=None, \*\*kwds)