Merge pull request #117 from Kapishin/master

Fix typos
Create TheArtOfGracefulReloading.rst
Update TheArtOfGracefulReloading.rst
Update TheArtOfGracefulReloading.rst
Update TheArtOfGracefulReloading.rst
Update TheArtOfGracefulReloading.rst
Update TheArtOfGracefulReloading.rst
Fix typos related to 1.9.20 changelog