chore: update video embed params

Author: thephez

Diff for: docs/user/wallets/dashcore/installation-windows.rst

@@ -87,7 +87,7 @@ the Dash Core installation file signature.
 
 .. raw:: html
 
-    <div style="position: relative; padding-bottom: 56.25%; height: 0; margin-bottom: 1em; overflow: hidden; max-width: 70%; height: auto;">
+    <div style="position: relative; padding-bottom: 56.25%; height: 0; margin-bottom: 1em; overflow: hidden; max-width: 100%; height: auto;">
         <iframe src="//www.youtube.com/embed/kBVF2PNpU3A" frameborder="0" allowfullscreen style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"></iframe>
     </div>