fix: replace HTML with standard markdown in README for nuget.org rendering - #10

Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4, actions/setup-dotnet@v4. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Possible null reference argument for parameter 'item' in 'void List<string>.Add(string item)'.

Found version-specific or distribution-specific runtime identifier(s): win7. Affected libraries: System.Private.ServiceModel. In .NET 8.0 and higher, assets for version-specific and distribution-specific runtime identifiers will not be found by default. See https://aka.ms/dotnet/rid-usage for details.

Found version-specific or distribution-specific runtime identifier(s): win7. Affected libraries: System.Private.ServiceModel. In .NET 8.0 and higher, assets for version-specific and distribution-specific runtime identifiers will not be found by default. See https://aka.ms/dotnet/rid-usage for details.

Found version-specific or distribution-specific runtime identifier(s): win7. Affected libraries: System.Private.ServiceModel. In .NET 8.0 and higher, assets for version-specific and distribution-specific runtime identifiers will not be found by default. See https://aka.ms/dotnet/rid-usage for details.

Possible null reference argument for parameter 'item' in 'void List<string>.Add(string item)'.

Possible null reference argument for parameter 'item' in 'void List<string>.Add(string item)'.

Possible null reference argument for parameter 'item' in 'void List<string>.Add(string item)'.

Possible null reference argument for parameter 'item' in 'void List<string>.Add(string item)'.

Possible null reference argument for parameter 'item' in 'void List<string>.Add(string item)'.