chore: fixes max/min types

Signed-off-by: Vincent Biret <[email protected]>

Author: baywet

docs/upgrade-guide-2.md

@@ -159,11 +159,11 @@ The OpenAPI 3.1 specification changes significantly how it leverages JSON Schema
 
 ```csharp
 
-        public decimal? ExclusiveMaximum { get; set; }  //type changed to reflect the new version of JSON schema
-        public decimal? ExclusiveMinimum { get; set; } // type changed to reflect the new version of JSON schema
+        public string? ExclusiveMaximum { get; set; }  // type changed to reflect the new version of JSON schema
+        public string? ExclusiveMinimum { get; set; } // type changed to reflect the new version of JSON schema
         public JsonSchemaType? Type { get; set; }  // Was string, now flagged enum
-        public decimal? Maximum { get; set; }      // Double???
-        public decimal? Minimum { get; set; }       // Double???
+        public string? Maximum { get; set; }      // Double???
+        public string? Minimum { get; set; }       // Double???
 
         public JsonNode Default { get; set; }  // Type matching no longer enforced. Was IOpenApiAny
         public bool ReadOnly { get; set; }  // No longer has defined semantics in OpenAPI 3.1