Update README.md

Author: alesanchezr

exercises/37-validity-of-password/README.md

@@ -1,17 +1,28 @@
 A website requires the users to input username and password to register. Write a program to check the validity of password input by users.
 Following are the criteria for checking the password:
-1. At least 1 letter between [a-z]
-2. At least 1 number between [0-9]
-1. At least 1 letter between [A-Z]
-3. At least 1 character from [$#@]
-4. Minimum length of transaction password: 6
-5. Maximum length of transaction password: 12
-Your program should accept a sequence of comma separated passwords and will check them according to the above criteria. Passwords that match the criteria are to be printed, each separated by a comma.
-Example
+
+1. At least 1 letter between [a-z]. 
+2. At least 1 number between [0-9]. 
+1. At least 1 letter between [A-Z]. 
+3. At least 1 character from [$#@]. 
+4. Minimum length of transaction password: 6. 
+5. Maximum length of transaction password: 12. 
+
+
+Your program should accept a sequence of comma separated passwords and will check them according to the above criteria. Passwords that match the criteria are to be printed, each separated by a comma.  
+
+### Example
+
 If the following passwords are given as input to the program:
+
+```
 ABd1234@1,a F1#,2w3E*,2We3345
+```
 Then, the output of the program should be:
+```
 ABd1234@1
+```
+ 
+### Hints:
 
-Hints:
-In case of input data being supplied to the question, it should be assumed to be a console input.
+In case of input data being supplied to the question, it should be assumed to be a console input.