Add Azure ML job CODEOWNERS (#26644)

Author: DouglasXiaoMS

.github/CODEOWNERS

@@ -119,6 +119,10 @@
 # PRLabel: %Local Endpoints
 /sdk/ml/azure-ai-ml/azure/ai/ml/_local_endpoints/                    @NonStatic2014 @arunsu @stanley-msft @JustinFirsching
 
+# PRLabel: %Job
+/sdk/ml/azure-ai-ml/azure/ai/ml/_schema/job                          @DouglasXiaoMS @TonyJ1 @wangchao1230
+/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job                        @DouglasXiaoMS @TonyJ1 @wangchao1230
+
 # PRLabel: %Recovery Services
 /sdk/recoveryservices/                                               @DheerendraRathor