release notes url has changed

[unitycoder]

url has changed again

// broken
https://unity3d.com/unity/whatsnew/unity-2018.2.20

// should be
https://unity3d.com/unity/whats-new/2018.2.20

// also 2018.3 still has unity-
https://unity3d.com/unity/whats-new/unity-2018.3.0

[unitycoder]

changed again,

new urls,
https://unity3d.com/unity/whats-new/2017.4.24
https://unity3d.com/unity/whats-new/2018.3.12
https://unity3d.com/unity/whats-new/2019.1.0

but then some versions are:
https://unity3d.com/unity/whats-new/unity-2017.1.0
https://unity3d.com/unity/whatsnew/unity-2017.1.5

https://unity3d.com/unity/whats-new/unity-5.0
https://unity3d.com/unity/whats-new/5.6.7

[unitycoder]

changed again?

doesnt work:
https://unity3d.com/unity/whats-new/unity-2018.4.5
should be:
https://unity3d.com/unity/whats-new/2018.4.5

[unitycoder]

complicated, have differences even within same version..

https://unity3d.com/unity/whatsnew/unity-2017.4.3
https://unity3d.com/unity/whats-new/2017.4.24