Add appropriate license & credit for content taken from the wiki
Follow-up from this thread !374 (comment 910105).
Some pages in this repo contain information that has been copied from the wiki but do not contain sufficient attribution to the original authors. As Kristen pointed out in the above thread, all content on the wiki is assumed to be licensed under CC BY-SA 4.0 https://community.kde.org/KDE_Community_Wiki:Copyrights. The terms of use for this license are:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
However, some files do not attribute the original author(s) (e.g. https://invent.kde.org/documentation/develop-kde-org/-/blob/master/content/docs/getting-started/building/ide/clion.md) and some files just do not contain any license information at all (e.g. https://invent.kde.org/documentation/develop-kde-org/-/blob/master/content/docs/getting-started/building/kdesrc-build-compile/index.md)