misc: chore: Fix XML errors

src/Ryujinx.HLE/Loaders/Mods/MemPatch.cs

@@ -23,7 +23,7 @@ namespace Ryujinx.HLE.Loaders.Mods
         /// Adds a patch in the form of an RLE (Fill mode).
         /// </summary>
         /// <param name="offset">Memory offset</param>
-        /// <param name="length"The fill length</param>
+        /// <param name="length">The fill length</param>
         /// <param name="filler">The byte to fill</param>
         public void AddFill(uint offset, int length, byte filler)
         {

src/Ryujinx.HLE/UI/IHostUIHandler.cs

@@ -44,6 +44,7 @@ namespace Ryujinx.HLE.UI
         /// <param name="value">The value associated to the <paramref name="kind"/>.</param>
         void ExecuteProgram(Switch device, ProgramSpecifyKind kind, ulong value);
 
+        /// <summary>
         /// Displays a Message Dialog box specific to Error Applet and blocks until it is closed.
         /// </summary>
         /// <returns>False when OK is pressed, True when another button (Details) is pressed.</returns>