How do you prevent pages on iPad from skipping lines in a letter format?

I have copied my own data into a letter template. Whenever I try to add the recipients address, pages will skip a line between the street address and the city and state. This creates an out of place space like so:

12345 fake street

Baltimore MD

When I press back space I get some thing that looks like this:

12345 fake street Baltimore MD

How can you get the city and state on the next line?

Thanks!