Change listSlice to sliceList to align with docs

[taylorsilva]

Description

No open issue for this and the fix was obvious enough. I have a feeling I'm the only one that's used this alias so far.

In the documentation this function alias is referred to as sliceList. When trying to use it I kept getting

function "sliceList" not defined

After going back and forth in the docs, double-checking my typing, copy-pasting from the docs, updating to the latest release, I eventually decided to dive into the code. Thankfully it was pretty obvious what went wrong here. I even went back to my template to verify that listSlice worked and it did! Hooray! Of course next release I'll need to change my listSlice to sliceList, but at least the code and docs will be aligned now :)

If you guys decide to go the other way and change the docs instead, or keep both listSlice and sliceList as aliases, feel free to close this PR and do the changes yourself or push commits to my branch. I've been very happy with the boilerplate so far, thanks so much for making and releasing it!

TODOs

Read the Gruntwork contribution guidelines.

• [x] Update the docs. code is now aligned with the docs
• [ ] Run the relevant tests successfully, including pre-commit checks.
• [x] Include release notes. If this PR is backward incompatible, include a migration guide.

Release Notes (draft)

Fixed the alias to the Spring slice function. It was documented as sliceList but was implemented as listSlice.

Migration Guide

Replace all usages of listSlice with sliceList instead.