Absolutely not, the reservations are not technically linked. And it’s very obvious that it’s the same name. Don’t worry about it.

If you by "reservation" mean the purchase of the Eurail pass, you must spell your name exactly as you did during the purchase when you connect the pass in the Railplanner. 

Hi there. As @AnnaB has alluded to, if you have misspelled your name on your Eurail Pass then you need to reach out to customer service via https://eurail.zendesk.com/hc/en-001/requests/new and have that corrected. As @BrendanDB has said, if you are only talking about a minor typo like you've mentioned on a reservation ticket of one of your trains then there is no issue.