Typo in Format-Hex (#3539)

src/Microsoft.PowerShell.Commands.Utility/commands/utility/FormatAndOutput/format-hex/Format-Hex.cs

@@ -11,7 +11,7 @@ namespace Microsoft.PowerShell.Commands
 {
     /// <summary>
     /// Displays the hexidecimal equivalent of the input data.
-    /// <summary>
+    /// </summary>
     [Cmdlet(VerbsCommon.Format, "Hex", SupportsShouldProcess = true, HelpUri ="https://go.microsoft.com/fwlink/?LinkId=526919")]
     [Alias ("fhx")]
     [OutputType(typeof(Microsoft.PowerShell.Commands.ByteCollection))]