Update README.md

Author: josemoracard

exercises/016-century/README.md

@@ -2,22 +2,24 @@
 
 ## 📝 Instructions:
 
-1. Write a function  `century()`. Given a year (as a positive integer), `century()` finds the respective number of the century. 
+1. Write a function `century()`. Given a year (as a positive integer), `century()` finds the respective number of the century. 
 
-## Example input:
+## 📎 Example input:
 
 ```py
 century(2001)
 ```
 
-## Example output:
+## 📎Example output:
 
-+ 21
+```py
+21
+```
 
 ## 💡 Hints:
 
-+ Note that, for example, 20th century began with the year 1901.
++ Note that, for example, the 20th century began with the year 1901.
 
-+ If you don't know how to start solving this assignment, please, review a theory for this lesson: https://snakify.org/lessons/integer_float_numbers/
++ If you don't know how to start solving this assignment, please review the theory for this lesson: https://snakify.org/lessons/integer_float_numbers/
 
 + You may also try step-by-step theory chunks: https://snakify.org/lessons/integer_float_numbers/steps/1/