merge(doc): update GIFs and related info for v2.16

refer: lervag#3143, lervag#3105

Author: lervag

VISUALS.md

@@ -25,8 +25,8 @@ page](#how-these-gifs-were-made).
 * If you notice mistakes or outdated content (following a VimTeX update, say),
   feel free to open a PR to fix it yourself. Alternatively, contact
   [@ejmastnak](https://github.com/ejmastnak) at
-  [ejmastnak@gmail.com](mailto:ejmastnak@gmail.com), who will be happy to help
-  fix it.
+  [elijan@ejmastnak.com](mailto:elijan@ejmastnak.com), who will be happy to
+  help fix it.
 
 ## Table of contents
 <!-- vim-markdown-toc GFM -->
@@ -53,6 +53,7 @@ page](#how-these-gifs-were-made).
   * [Change surrounding delimiters](#change-surrounding-delimiters)
 * [Toggling commands](#toggling-commands)
   * [Toggling starred commands and environments](#toggling-starred-commands-and-environments)
+  * [Toggling between related environments](#toggling-between-related-environments)
   * [Toggling between inline and display math](#toggling-between-inline-and-display-math)
   * [Toggling delimiter modifiers](#toggling-delimiter-modifiers)
   * [Toggling fractions](#toggling-fractions)
@@ -202,13 +203,19 @@ modifiers.
 Use `tsc` and `tss` to toggle between starred and un-starred versions of
 commands and environments, respectively.
 
-![`tsc` and `tss`](https://github.com/lervag/vimtex-media/blob/main/gif/toggle/tsc-tse.gif)
+![`tsc` and `tss`](https://github.com/lervag/vimtex-media/blob/main/gif/toggle/tsc-tss.gif)
 
 > [!NOTE]
 >
 > `tss` used to be `tse` before v2.16.
 > See [the release notes](https://github.com/lervag/vimtex/releases/tag/v2.16) for more info.
 
+### Toggling between related environments
+
+Use `tse` to toggle between related environments (e.g. between `itemize` and `enumerate`).
+
+![`tse`](https://github.com/lervag/vimtex-media/blob/main/gif/toggle/tse.gif)
+
 ### Toggling between inline and display math
 
 Use `ts$` to toggle between inline math, display math, and standard math environments.