Contributions, whether on the Core or on the Documentation, are always welcome, and we do our best to process them quickly. A fault on the documentation, a passage that could be clearer, a bug on the Core ? The contributions are there for that.
There is lot of stuff to do, and even not being a developper, you can help!
Read here for more informations about contributing to Core developement or Documentation.
Join us on Community and post your question there in the correct category with a descriptive tag.