docs: Fixes to latest What's New (#2219)

## Description:
Couple bugs in the last What's New; fixing before announcing.

## Is this change user facing?
NO

---------

Co-authored-by: mieubrisse <mieubrisse@gmail.com>

docs/docs/whats-new.md

@@ -2,31 +2,28 @@
 title: What's New In Kurtosis
 sidebar_label: What's New
 slug: '/whats-new'
+toc_max_heading_level: 2
 ---
 
-<!-- !!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
-<!--                   ATTENTION KURTOSIANS                              -->
-<!--   Keep the latest on top, so users don't have to scroll to bottom   -->
-<!-- !!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
+What's New In Kurtosis
+======================
+
+For detailed information about the changes in each release, see [the changelog](/changelog).
 
 2024-02-26
-==========
+----------
 
-Enclave Builder UI
-------------------
+### Enclave Builder UI
 
 You can now build enclaves without writing code using the enclave builder UI:
 
-<p align="center">
-  <img src="../static/img/whats-new/2024-02-26/enclave-builder.png" />
-</p>
+![enclave-builder.png](../static/img/whats-new/2024-02-26/enclave-builder.png)
 
 The UI will automatically generate Starlark for you, which can be viewed with the "Preview" button.
 
 To enable the enclave builder UI, go to the "About" icon in the bottom-left corner of the Kurtosis app and select "Enable experimental enclave builder interface". You'll then see an "Enclave Builder" button in the Enclave List screen.
 
-Kurtosis Github Action
-----------------------
+### Kurtosis Github Action
 
 You can now run Kurtosis inside your GH Actions CI using [our prebuilt Action](https://github.com/kurtosis-tech/kurtosis-github-action).
 
@@ -43,23 +40,18 @@ You can now run Kurtosis inside your GH Actions CI using [our prebuilt Action](h
 
 This can be useful for integration & end-to-end tests, and can be paired with [ImageBuildSpec](https://docs.kurtosis.com/api-reference/starlark-reference/image-build-spec/) so that Kurtosis will both build the image and instantiate the environment.
 
-Human-friendly plan steps
--------------------------
+### Human-friendly plan steps
 
 The default way `kurtosis run` describes plan steps is now human-friendly:
 
-<p align="center">
-  <img src="../static/img/whats-new/2024-02-26/human-friendly-descriptions.png" />
-</p>
+![human-friendly-descriptions.png](../static/img/whats-new/2024-02-26/human-friendly-descriptions.png)
 
 You can return to the previous way by adding `--verbosity brief` to your `kurtosis run` flags.
 
-# Bugs & Feedback
+### Bugs & Feedback
 
 You can now submit bugs from the Kurtosis app itself using the button in the bottom-left:
 
-<p align="center">
-  <img src="../static/img/whats-new/2024-02-26/bug-reports.png" />
-</p>
+![bug-reports.png](../static/img/whats-new/2024-02-26/bug-reports.png)
 
 We're very interested in your feedback about the above features, so let us know what you think!