Minor fixes (#2950)

Author: nxtn

xml/System.Text.Json/JsonElement+ArrayEnumerator.xml

@@ -100,7 +100,7 @@
       <Parameters />
       <Docs>
         <summary>Returns an enumerator that iterates through a collection.</summary>
-        <returns>An enumeratore that can be used to iterate through the array.</returns>
+        <returns>An enumerator that can be used to iterate through the array.</returns>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>