Docs: Use same expand icon in nav menu

[danielchalmers]

Description

For consistency

How Has This Been Tested?

visually

Type of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation (fix or improvement to the website or code docs)

Before (take note of the mix of two different icons)

After (all use the same default icon set)

Checklist

• The PR is submitted to the correct branch (dev).
• My code follows the code style of this project.
• I've added relevant tests.

[danielchalmers]

Don't know how I didn't notice this before

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.87%. Comparing base (28bc599) to head (623529c).
Report is 294 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #9233      +/-   ##
==========================================
+ Coverage   89.82%   90.87%   +1.04%     
==========================================
  Files         412      401      -11     
  Lines       11878    12521     +643     
  Branches     2364     2433      +69     
==========================================
+ Hits        10670    11379     +709     
+ Misses        681      604      -77     
- Partials      527      538      +11     

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[dennisrahmen]

Wouldn't it be the other icon?
Since all other components use it as the default icon for opening/expanding?

[henon]

I am also rooting for the chevron

[danielchalmers]

@dennisrahmen @henon So do we change the default to ExpandMore?

MudBlazor/src/MudBlazor/Components/NavMenu/MudNavGroup.razor.cs

Lines 119 to 124 in 9b365aa

	/// <summary>
	/// If set, overrides the default expand icon.
	/// </summary>
	[Parameter]
	[Category(CategoryTypes.NavMenu.Appearance)]
	public string ExpandIcon { get; set; } = Icons.Material.Filled.ArrowDropDown;

[henon]

No, changing a default is nasty business. Better would be to make sure the nav groups are all set to chevron in our docs

[danielchalmers]

@henon done

[henon]

Thanks