Updated issue and pr template.

Author: kelvinlauKL

.github/ISSUE_TEMPLATE.md

@@ -6,14 +6,8 @@
 
 ### Brief Intro
 
-> Describe this issue below in 1 sentence.
+<!-- Describe the issue briefly.-->
 
 ### More Details
 
-> If necessary, start off with the code snippet. Put the code in between ``` to format them into code blocks.
-
-[INSERT CODE HERE]
-
-> Describe the problem in more detail.
-
-[INSERT DETAILS HERE]
+<!-- If necessary, start off with the code snippet. Put the code in between ``` to format them into code blocks.-->

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,11 @@
+<!-- Thanks for contributing to the SAC! Before you submit your pull request, please make sure to check the following boxes by putting an x in the [ ] -->
+
+### Checklist
+
+- [ ] I've looked at the [contribution guidelines](https://github.com/raywenderlich/swift-algorithm-club/blob/master/.github/CONTRIBUTING.md).
+- [ ] This pull request is complete and ready for review.
+
+### Description
+
+<!-- In a short paragraph, describe the PR --> 
+