That is not true, they did not make more ripples, it has to do with how Coinmarketcap calculates the market cap of Ripples.
https://www.ripplelabs.com/xrp-distribution/There has always been 100 billion Ripples, but Coinmarketcap doesn't count the ripples that Ripple Labs owns in the market cap on their web site. It seems ripple labs either distributed more of the ripples to users, or if you read the asterisk on the user's ownership it says:
*Total include business development agreements that are still pending.
It seems they probably made a "business development agreement". Whatever that means.. Technically, Ripple has a market cap of $487,000,000
Not that I'm a huge fan of Ripple.. but that's just how it is.