Update Vector512.xml (#9570)

Author: danmoseley

xml/System.Runtime.Intrinsics/Vector512.xml

@@ -14,7 +14,7 @@
   </Base>
   <Interfaces />
   <Docs>
-    <summary>Provides a collection of static methods for creating, manipulating, and otherwise operting on 512-bit vectors.</summary>
+    <summary>Provides a collection of static methods for creating, manipulating, and otherwise operating on 512-bit vectors.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>