README-en.md edited online with Bitbucket

README-en.md

@@ -197,7 +197,7 @@ In this exercise, you will implement a function that given a cleartext and keywo
 
 ### Exercise 2 - Keyword and Cleartext of Arbitrary Lengths
 
-In this exercise, you will modify the code for the cypher function from Exercise 1 so that the application can now cypher a message using a keyword of arbitrary length. 
+In this exercise, you will modify the code for the `cypher` function from Exercise 1 so that the application can now cypher a message using a keyword of arbitrary length. 
 
 #### Instructions