Fix size specifier (#1854), fixes #1727

Author: YegorStepanov

src/BenchmarkDotNet/Diagnosers/MemoryDiagnoser.cs

@@ -52,7 +52,7 @@ private class AllocatedMemoryMetricDescriptor : IMetricDescriptor
             public string Id => "Allocated Memory";
             public string DisplayName => "Allocated";
             public string Legend => "Allocated memory per single operation (managed only, inclusive, 1KB = 1024B)";
-            public string NumberFormat => "N0";
+            public string NumberFormat => "0.##";
             public UnitType UnitType => UnitType.Size;
             public string Unit => SizeUnit.B.Name;
             public bool TheGreaterTheBetter => false;

src/BenchmarkDotNet/Disassemblers/DisassemblyDiagnoser.cs

@@ -165,7 +165,7 @@ private class NativeCodeSizeMetricDescriptor : IMetricDescriptor
             public string Id => "Native Code Size";
             public string DisplayName => "Code Size";
             public string Legend => "Native code size of the disassembled method(s)";
-            public string NumberFormat => "N0";
+            public string NumberFormat => "0.##";
             public UnitType UnitType => UnitType.Size;
             public string Unit => SizeUnit.B.Name;
             public bool TheGreaterTheBetter => false;