Fix xml method description when dictionary args present (#7765)

Author: smbecker

src/HotChocolate/Core/src/Types/Types/Descriptors/Conventions/XmlDocumentationProvider.cs

@@ -405,7 +405,8 @@ private static MemberName GetMemberElementName(MemberInfo member)
                             "(`[0-9]+)|(, .*?PublicKeyToken=[0-9a-z]*)",
                             string.Empty)
                         .Replace("[[", "{")
-                        .Replace("]]", "}"))
+                        .Replace("]]", "}")
+                        .Replace("],[", ","))
                     .ToArray());
 
                 if (!string.IsNullOrEmpty(paramTypesList))

src/HotChocolate/Core/test/Types.Tests.Documentation/WithDictionaryArgs.cs

@@ -0,0 +1,11 @@
+namespace HotChocolate.Types.Descriptors;
+
+public class WithDictionaryArgs
+{
+    /// <summary>
+    /// This is a method description
+    /// </summary>
+    /// <param name="args">Args description</param>
+    /// <returns></returns>
+    public string Method(Dictionary<string, string>? args = null) => string.Empty;
+}

src/HotChocolate/Core/test/Types.Tests/Types/Descriptors/Conventions/XmlDocumentationProviderTests.cs

@@ -414,4 +414,20 @@ public void When_method_has_no_returns_then_it_is_ignored()
         // assert
         methodDescription.MatchSnapshot();
     }
+
+    [Fact]
+    public void When_method_has_dictionary_args_then_it_is_found()
+    {
+        // arrange
+        var documentationProvider = new XmlDocumentationProvider(
+            new XmlDocumentationFileResolver(),
+            new NoOpStringBuilderPool());
+
+        // act
+        var methodDescription = documentationProvider.GetDescription(
+            typeof(WithDictionaryArgs).GetMethod(nameof(WithDictionaryArgs.Method))!);
+
+        // assert
+        Assert.Equal("This is a method description", methodDescription);
+    }
 }