Merge pull request #118 from Kapishin/master

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