fix typo

Author: xtqqczze

src/libraries/System.Private.CoreLib/src/System/Single.cs

@@ -1469,8 +1469,8 @@ private static bool TryConvertTo<TOther>(float value, [MaybeNullWhen(false)] out
             else if (typeof(TOther) == typeof(nuint))
             {
 #if MONO
-                nuint actualResult = (value >= uint.MaxValue) ? nuint.MaxValue :
-                                     (value <= uint.MinValue) ? nuint.MinValue : (nuint)value;
+                nuint actualResult = (value >= nuint.MaxValue) ? nuint.MaxValue :
+                                     (value <= nuint.MinValue) ? nuint.MinValue : (nuint)value;
 #else
                 nuint actualResult = (nuint)value;
 #endif