test: update snapshot

Author: ikesnowy

test/Cnblogs.DashScope.Sdk.UnitTests/Utils/Snapshots.MultimodalGeneration.cs

@@ -126,7 +126,7 @@ public static class MultimodalGeneration
                             MultimodalMessage.User(
                             [
                                 MultimodalMessageContent.ImageContent(
-                                    "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="),
+                                    "https://dashscope.oss-cn-beijing.aliyuncs.com/images/dog_and_girl.jpeg"),
                                 MultimodalMessageContent.TextContent("这个图片是哪里，请用简短的语言回答")
                             ])
                         ]
@@ -174,7 +174,7 @@ public static class MultimodalGeneration
                             MultimodalMessage.User(
                             [
                                 MultimodalMessageContent.ImageContent(
-                                    "https://dashscope.oss-cn-beijing.aliyuncs.com/images/dog_and_girl.jpeg"),
+                                    "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="),
                                 MultimodalMessageContent.TextContent("这个图片是哪里，请用简短的语言回答")
                             ])
                         ]