Standardize ISSUE_TEMPLATE.md (#272)

Author: braebot

.github/ISSUE_TEMPLATE.md

@@ -1,10 +1,11 @@
-### General Information
+<!-- ** General notice: if you have an API issue, see our [REST API issues](https://github.com/paypal/PayPal-REST-API-issues) repository, or contact [PayPal Tech Support](https://developer.paypal.com/support/). ** -->
+### General information
 
-- Mode (Sandbox/Live):
-- PayPal-Debug-ID(s) (from any logs):
-- Version of Ruby used:
-- SDK Version:
+* SDK/Library version: <!-- Example: 4.7.2 -->
+* Environment: <!-- Is this issue in Sandbox or Production? -->
+* `PayPal-Debug-ID` values: <!-- Report PayPal-Debug-IDs from any logs -->
+* Language, language version, and OS: <!-- Example: Java 1.8.0_101-b13 on Ubuntu 16.10 -->
 
-### Issue Description
+### Issue description
 
-> Please include as many details (logs, steps to reproduce, frameworks/dependencies) as you can to help us reproduce this issue faster.
+<!-- To help us quickly reproduce your issue, include as many details as possible, such as logs, steps to reproduce, and so on.  If the issue reports a new feature, follow the [user story](https://en.wikipedia.org/wiki/User_story) format to clearly describe the use case. -->