Fix few text typos and phrases in docstrings
"""
-Watching & streaming of the watch-events.
+Watching and streaming watch-events.
Kubernetes client's watching streams are synchronous. To make them asynchronous,
we put them into a `concurrent.futures.ThreadPoolExecutor`,
and yield from there asynchronously.
However, async/await coroutines misbehave with `StopIteration` exceptions
-as raise by the `next` method: see `PEP-479`_.
+raised by the `next` method: see `PEP-479`_.
As a workaround, we replace `StopIteration` with our custom `StopStreaming`
inherited from `RuntimeError` (as suggested by `PEP-479`_),
and re-implement the generators to make them async.
All of this is a workaround for the standard Kubernetes client's limitations.
-They are not needed if the client library is natively asynchronous.
+They would not be needed if the client library were natively asynchronous.
.. _PEP-479: https://www.python.org/dev/peps/pep-0479/
"""
