Update release documentation
sha256 should be sha256sum
@@ -279,7 +279,7 @@ When new git tag is created, Travis-ci deploy job automatically builds binaries
```sh
RELEASE=X.X.X
wget https://github.com/redhat-developer/odo/archive/v$RELEASE.tar.gz
- sha256 v$RELEASE.tar.gz
+ sha256sum v$RELEASE.tar.gz
```
Then open a PR to update: [odo.rb](https://github.com/kadel/homebrew-odo/blob/master/Formula/odo.rb) in [kadel/homebrew-odo](https://github.com/kadel/homebrew-odo)
