Fixed typo (atttributes) (#3130)

Author: hubalazs

xml/System.Reflection.Metadata/ManifestResource.xml

@@ -50,7 +50,7 @@
       </ReturnValue>
       <Docs>
         <summary>Gets the manifest resource attributes.</summary>
-        <value>A bitwise combination of the enumeration values that specify the manifest resource atttributes.</value>
+        <value>A bitwise combination of the enumeration values that specify the manifest resource attributes.</value>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>