typo: Double word "are" (dotnet/corefxdotnet/coreclr#36275)

Signed-off-by: Ndotnet-bot <dotnet-bot@microsoft.com>


Commit migrated from https://github.com/dotnet/coreclr/commit/026ff36a4fa9a37c7ee5ded0f77e4bb3d99c3883

src/libraries/System.Private.CoreLib/src/System/Security/SecurityElement.cs

@@ -608,7 +608,7 @@ public string Attribute(string name)
         public SecurityElement SearchForChildByTag(string tag)
         {
             // Go through all the children and see if we can
-            // find the one are are asked for (matching tags)
+            // find the ones that are asked for (matching tags)
             if (tag == null)
                 throw new ArgumentNullException(nameof(tag));