Tweak issue template and reorganize FAQ
<!--
-Before filing an issue, please check our Frequently Asked Questions:
+Before filing an issue, please reproduce with the latest version of Jib.
- https://github.com/GoogleContainerTools/jib/blob/master/docs/faq.md
+If you are encountering errors pulling or pushing to remote registries,
+please check our Frequently Asked Questions before filing an issue:
-Please use this template to provide more context for your issue.
+ https://github.com/GoogleContainerTools/jib/blob/master/docs/faq.md#registry-errors
-->
-**Description of the issue**:
-
-<!--
-If you are encountering errors pulling or pushing to remote registries,
-please check our FAQ before filing an issue. Specifically:
+**Environment**:
- - FORBIDDEN or DENIED errors
- https://github.com/GoogleContainerTools/jib/blob/master/docs/faq.md#what-should-i-do-when-the-registry-responds-with-forbidden-or-denied
+- *Jib version:*
+- *Build tool:* <!-- Maven/Gradle, including version -->
+- *OS:*
- - UNAUTHORIZED errors:
- https://github.com/GoogleContainerTools/jib/blob/master/docs/faq.md#what-should-i-do-when-the-registry-responds-with-unauthorized
+**Description of the issue**:
- - Other errors accessing remote registries
- https://github.com/GoogleContainerTools/jib/blob/master/docs/faq.md#how-can-i-diagnose-problems-pulling-or-pushing-from-remote-registries
--->
**Expected behavior**:
+
**Steps to reproduce**:
<!-- Please provide a minimal and precise series of steps -->
-**Environment**: <!-- OS, Maven, and other relevant environment information -->
+ 1.
+ 2.
+ 3.
**`jib-maven-plugin` Configuration**: <!-- Delete this section if not used -->
```xml
