Update README.md

Author: josemoracard

exercises/41-frequency-of-words/README.md

@@ -2,7 +2,11 @@
 
 ## 📝 Instructions:
 
-1. Write a program to compute the frequency of the words from the input. The output should output after sorting the key alphanumerically. 
+1. Write a function called `compute_word_frequency()` to compute the frequency of the words from a string input.
+
+2. Put each word separated by a space in a dictionary and count its frequency.
+
+3. Sort the dictionary alphanumerically and print in the console each key in a new line.
 
 ## 📎 Example input:
 
@@ -12,7 +16,7 @@
 
 ## 📎 Example output:
 
-```py
+```text
 2: 2
 3.: 1
 3?: 1
@@ -25,3 +29,7 @@ choosing: 1
 or: 2
 to: 1
 ```
+
+## 💡 Hint:
+
++ You can put each word of a string in a list with the `split()` method, then it is easier to work on it.