I may not understand your description correctly.
Is the problem that your text has a paragraph mark (¶) or a line break
character (a bent arrow) at the end of each line (if formatting marks are
shown)?

In that case, you should be able to correct the document without using a
macro but using AutoFormat or Find and Replace. See the descriptions in this
article:
http://www.word.mvps.org/FAQs/Formatting/CleanWebText.htm