Endeavor is a fancy word that means to try or to attempt.
But if I were the editor and had suggested that change, I would have done it for the following reasons:
1) to change the subject of the sentence from first person singular (I) to third person singular (this paper).
Scholastic or scientific papers are usually written in the third person. This makes them sound more objective. If you use the first person in a paper, then the paper can come across as the author (you) expressing your opinion rather than facts.
2) Closely related to #1 is to change the language of the paper to be more formal in sentence structure and word choice (endeavor sounds more formal than try). The reason is to conform to the normal and expected style of academic papers.
So, I am assuming the article you are writing is academic or scholastic in nature. But if it is not, perhaps the editing suggestions are not the best.