fix/migration 3p11 (#5370)

platform/docs/versioned_docs/version-3.11/user-guide/viewer/mpr.md

@@ -0,0 +1,18 @@
+# Multiplanar Reconstruction
+
+
+## Crosshairs
+
+
+<div style={{padding:"56.25% 0 0 0", position:"relative"}}>
+    <iframe width="560" height="315" src="https://www.youtube.com/embed/2pQ8F8f__Ic?si=JkabcjBrY68C6EeU" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+</div>
+
+
+
+# MPR Slab Oblique
+
+
+<div style={{padding:"56.25% 0 0 0", position:"relative"}}>
+    <iframe width="560" height="315" src="https://www.youtube.com/embed/Qe3j6I-RdlA?si=UejPdGNSSZBS66qE" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+</div>