Fixes PropertyGrid.ResetHelpForeColor resets the back color instead of the fore color

src/System.Windows.Forms/System/Windows/Forms/Controls/PropertyGrid/PropertyGrid.cs

@@ -3628,7 +3628,7 @@ internal void RemoveTab(Type tabType)
 
     private void ResetHelpBackColor() => _helpPane.ResetBackColor();
 
-    private void ResetHelpForeColor() => _helpPane.ResetBackColor();
+    private void ResetHelpForeColor() => _helpPane.ResetForeColor();
 
     /// <summary>
     ///  This method is intended for use in replacing a specific selected root object with another object of the

src/test/unit/System.Windows.Forms/System/Windows/Forms/PropertyGridTests.cs

@@ -1972,6 +1972,36 @@ public void PropertyGrid_HelpForeColor_ShouldSerializeValue_Success()
         Assert.False(property.ShouldSerializeValue(control));
     }
 
+    [WinFormsFact]
+    public void PropertyGrid_ResetHelpForeColor_Invoke_ResetsForeColorOnly()
+    {
+        using PropertyGrid control = new()
+        {
+            HelpForeColor = Color.Red,
+            HelpBackColor = Color.Yellow
+        };
+
+        control.TestAccessor.Dynamic.ResetHelpForeColor();
+
+        Assert.Equal(SystemColors.ControlText, control.HelpForeColor);
+        Assert.Equal(Color.Yellow, control.HelpBackColor);
+    }
+
+    [WinFormsFact]
+    public void PropertyGrid_ResetHelpBackColor_Invoke_ResetsBackColorOnly()
+    {
+        using PropertyGrid control = new()
+        {
+            HelpForeColor = Color.Red,
+            HelpBackColor = Color.Yellow
+        };
+
+        control.TestAccessor.Dynamic.ResetHelpBackColor();
+
+        Assert.Equal(SystemColors.Control, control.HelpBackColor);
+        Assert.Equal(Color.Red, control.HelpForeColor);
+    }
+
     [WinFormsTheory]
     [InlineData(true, true, 0, 0, 1)]
     [InlineData(true, false, 1, 1, 2)]