Site: source links for springsettings are incorrect

The source links to `build/src` which isn't a real file:

https://github.com/beyond-all-reason/RecoilEngine/blob/master/build/src/rts/System/LogOutput.cpp -> link on site, doesn't actually work
https://github.com/beyond-all-reason/RecoilEngine/blob/master/rts/System/LogOutput.cpp -> what it should be, without `build/src`.

Trace the site’s source-link generation for springsettings and compare the broken LogOutput.cpp URL under build/src with the intended rts/System/LogOutput.cpp path. Verify that generated source links omit build/src and resolve to the corresponding files on GitHub.

Written by the indexing model from the issue text.