Update PR template

Author: mariana-caldas

pull_request_template.md

@@ -1,15 +1,13 @@
-|                        Web Dev Path                      |
-| :-----------------------------------------------------------: |
+|                                    Web Dev Path                                    |
+| :--------------------------------------------------------------------------------: |
 | [**issueNumber**](https://github.com/MarianaSouza/web-dev-path/issues/issueNumber) |
 
-#### What is this change?
+#### Have you updated the cHANGELOG file? If not, please do it.
 
+#### What is this change?
 
 #### Were there any complications while making this change?
 
-
 #### How did you verify this change?
 
-
 #### When should this be merged?
-