fix IntelliSense tag (#3158)

Author: mairaw

xml/System.Collections.Immutable/ImmutableArray`1.xml

@@ -309,7 +309,7 @@
       <Parameters />
       <Docs>
         <typeparam name="TOther">To be added.</typeparam>
-        <summary>Initializes a new instance of the <see cref="T:System.Collections.Immutable.ImmutableArray`1" /> struct by casting the underlying array to an array of type <typeparameter name="TOther"/>.</summary>
+        <summary>Initializes a new instance of the <see cref="T:System.Collections.Immutable.ImmutableArray`1" /> struct by casting the underlying array to an array of type <typeparamref name="TOther"/>.</summary>
         <returns>To be added.</returns>
         <remarks>To be added.</remarks>
         <exception cref="T:System.InvalidCastException">Thrown if the cast is illegal.</exception>