updated video (#446)

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## Summary by CodeRabbit

* **Documentation**
* Updated release grades documentation with improved clarity and
organization.
  * Enhanced heading capitalization and phrasing for consistency.
  * Restructured workflow steps for better guidance.
  * Updated accompanying media and visual references.

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Author: LolaValente

source/instructors/teaching/grading/release-grades.rst

@@ -10,7 +10,7 @@ By default students are not shown the grades until you decide to release them to
 
 .. raw:: html
 
-    <script src="https://fast.wistia.com/embed/medias/z7xmzl5xbd.jsonp" async></script><script src="https://fast.wistia.com/assets/external/E-v1.js" async></script><div class="wistia_responsive_padding" style="padding:56.25% 0 0 0;position:relative;"><div class="wistia_responsive_wrapper" style="height:100%;left:0;position:absolute;top:0;width:100%;"><div class="wistia_embed wistia_async_z7xmzl5xbd videoFoam=true" style="height:100%;position:relative;width:100%"><div class="wistia_swatch" style="height:100%;left:0;opacity:0;overflow:hidden;position:absolute;top:0;transition:opacity 200ms;width:100%;"><img src="https://fast.wistia.com/embed/medias/z7xmzl5xbd/swatch" style="filter:blur(5px);height:100%;object-fit:contain;width:100%;" alt="" aria-hidden="true" onload="this.parentNode.style.opacity=1;" /></div></div></div></div>
+    <script src="https://fast.wistia.com/embed/medias/63ls7s10qq.jsonp" async></script><script src="https://fast.wistia.com/assets/external/E-v1.js" async></script><div class="wistia_responsive_padding" style="padding:56.25% 0 0 0;position:relative;"><div class="wistia_responsive_wrapper" style="height:100%;left:0;position:absolute;top:0;width:100%;"><div class="wistia_embed wistia_async_63ls7s10qq videoFoam=true time=8s" style="height:100%;position:relative;width:100%">&nbsp;</div></div></div>
 
 
 If you want to release the grades as the assignments are graded, follow these steps:
@@ -21,14 +21,14 @@ If you want to release the grades as the assignments are graded, follow these st
    .. image:: /img/changereleasegrades.png
       :alt: Release Grades Automatically
 
-Enable Release Grades toggle
+Enable Release Grades Toggle
 ----------------------------
 You can enable the :ref:`Release Grades Automatically <auto-release-grades>` at the organization level so that the **Release Grades** toggle is visible on the **Course** page.
 
 .. image:: /img/Release-grades.png
    :alt: Release grades toggle
 
-Release grade from assignment
+Release Grade From Assignment
 -----------------------------
 You can also release grades for an assignment by toggling the switch in the **Release grades** column.