Improve code quality.

docs/UserGuide.md

@@ -118,14 +118,15 @@ A person can have any number of tags (including 0)
 Format birthday as ddMMyyyy.
 </div>
 
-**Sample Usage:**
-* `add n/John Doe p/98765432 e/johnd@example.com a/John street, block 123, #01-01`
-* `add n/Betsy Crowe t/friend e/betsycrowe@example.com a/Newgate Prison b/25121999 p/1234567 t/criminal`
-
 Notes:
 * Phone number must be unique.
 * Birthdays are optional and can be added in future with `edit` command.
 * Future dates as birthdays are not allowed.
+
+**Sample Usage:**
+* `add n/John Doe p/98765432 e/johnd@example.com a/John street, block 123, #01-01`
+* `add n/Betsy Crowe t/friend e/betsycrowe@example.com a/Newgate Prison b/25121999 p/1234567 t/criminal`
+
 ### Listing all persons : `list`
 
 Shows a list of all persons in the address book.