Add summary documentation for Vector*

Author: dakersnar

xml/System.Runtime.Intrinsics/Vector128.xml

@@ -18,7 +18,7 @@
   </Base>
   <Interfaces />
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Provides a collection of static convenience methods for creating, manipulating, combining, and converting generic 128-bit vectors.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>

xml/System.Runtime.Intrinsics/Vector128`1.xml

@@ -37,8 +37,8 @@
     </Attribute>
   </Attributes>
   <Docs>
-    <typeparam name="T">To be added.</typeparam>
-    <summary>To be added.</summary>
+    <typeparam name="T">The vector type. <c>T</c> can be any primitive numeric type.</typeparam>
+    <summary>Represents a 128-bit vector of a specified numeric type that is suitable for low-level optimization of parallel algorithms.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>

xml/System.Runtime.Intrinsics/Vector256.xml

@@ -18,7 +18,7 @@
   </Base>
   <Interfaces />
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Provides a collection of static convenience methods for creating, manipulating, combining, and converting generic 256-bit vectors.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>

xml/System.Runtime.Intrinsics/Vector256`1.xml

@@ -37,8 +37,8 @@
     </Attribute>
   </Attributes>
   <Docs>
-    <typeparam name="T">To be added.</typeparam>
-    <summary>To be added.</summary>
+    <typeparam name="T">The vector type. <c>T</c> can be any primitive numeric type.</typeparam>
+    <summary>Represents a 256-bit vector of a specified numeric type that is suitable for low-level optimization of parallel algorithms.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>

xml/System.Runtime.Intrinsics/Vector64.xml

@@ -18,7 +18,7 @@
   </Base>
   <Interfaces />
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Provides a collection of static convenience methods for creating, manipulating, combining, and converting generic 64-bit vectors.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>

xml/System.Runtime.Intrinsics/Vector64`1.xml

@@ -37,8 +37,8 @@
     </Attribute>
   </Attributes>
   <Docs>
-    <typeparam name="T">To be added.</typeparam>
-    <summary>To be added.</summary>
+    <typeparam name="T">The vector type. <c>T</c> can be any primitive numeric type.</typeparam>
+    <summary>Represents a 64-bit vector of a specified numeric type that is suitable for low-level optimization of parallel algorithms.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>