This makes the generated HTML much more readable in diffs because a single word change will not change a line with potentially many tags.
The output is now slightly larger because of the extra linefeeds.
The primary source for project info is now src/version.h.
The pgBackRestDoc::ProjectInfo module loads the project info from src/version.h at runtime so there is no need to update it.
This is consistent with the way BackRest and BackRest test were renamed way back in 18fd2523.
More modules will be moving to pgBackRestDoc soon so renaming now reduces churn later.
