Typo.

module3/exo1/influenza-like-illness-analysis.org

@@ -78,7 +78,7 @@ if not os.path.exists(data_file):
 #+END_SRC
 
 We start processing by extracting the part we are interested in. We
-first split the flie into lines, of which we discard the first one
+first split the file into lines, of which we discard the first one
 that contains a comment. We then split the remaining lines into columns.
 
 #+BEGIN_SRC python :results silent :exports both