Update ref to stable and fix warnings

Author: JimBobSquarePants

src/ImageSharp.Web/Commands/Converters/ColorConverter.cs

@@ -50,7 +50,7 @@ public Color ConvertFrom(CommandParser parser, CultureInfo culture, string? valu
 
         // Numeric r,g,b - r,g,b,a
         char separator = ConverterUtility.GetListSeparator(culture);
-        if (value.IndexOf(separator) != -1)
+        if (value.Contains(separator))
         {
             string[] components = value.Split(separator);
 

src/ImageSharp.Web/Commands/Converters/EnumConverter.cs

@@ -35,7 +35,7 @@ public sealed class EnumConverter : ICommandConverter<object>
         try
         {
             char separator = ConverterUtility.GetListSeparator(culture);
-            if (value.IndexOf(separator) != -1)
+            if (value.Contains(separator))
             {
                 long convertedValue = 0;
                 foreach (string pill in GetStringArray(value, separator))

src/ImageSharp.Web/FormattedImage.cs

@@ -127,7 +127,7 @@ internal static async Task<FormattedImage> LoadAsync(DecoderOptions options, Str
     internal void Save(Stream destination) => this.Image.Save(destination, this.encoder);
 
     /// <summary>
-    /// Gets the EXIF orientation metata for the <see cref="FormattedImage"/>.
+    /// Gets the EXIF orientation metadata for the <see cref="FormattedImage"/>.
     /// </summary>
     /// <param name="value">
     /// When this method returns, contains the value parsed from decoded EXIF metadata; otherwise,

src/ImageSharp.Web/ImageSharp.Web.csproj

@@ -46,7 +46,7 @@
   <ItemGroup>
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.IO.RecyclableMemoryStream" Version="2.3.2" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.0-alpha.0.43" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.0" />
   </ItemGroup>
 
   <Import Project="..\..\shared-infrastructure\src\SharedInfrastructure\SharedInfrastructure.projitems" Label="Shared" />