Fix typos in multiple `.rst` files (#1668)

diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index b065d19..ddcbd55 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -636,7 +636,7 @@
    without yielding another value, an :exc:`StopAsyncIteration` exception is
    raised by the awaitable.
    If the generator function does not catch the passed-in exception, or
-   raises a different exception, then when the awaitalbe is run that exception
+   raises a different exception, then when the awaitable is run that exception
    propagates to the caller of the awaitable.
 
 .. index:: exception: GeneratorExit