Don’t worry, I’ve found the problem. Its nothing to do with that particular source or that text. ANY place where the html class “fact_table” is used in the colors theme will be capitalised! So a bug to be fixed.
Short term if you want you can fix it by adding this to your colors theme mystyle.css file:
.facts_table {
text-transform: none;
}
.facts_label {
text-transform: capitalize;
}