SYCL: Fix indentation for ggml_sycl_op_mean implementation

Author: yael-works

ggml/src/ggml-sycl/ggml-sycl.cpp

@@ -4439,7 +4439,7 @@ static bool ggml_backend_sycl_device_supports_op(ggml_backend_dev_t dev, const g
             return op->src[0]->type == GGML_TYPE_F32 && op->op_params[0] == GGML_SCALE_MODE_NEAREST;
         case GGML_OP_SUM:
         case GGML_OP_SUM_ROWS:
-	case GGML_OP_MEAN:
+    case GGML_OP_MEAN:
         case GGML_OP_ARGSORT:
             return ggml_is_contiguous(op->src[0]);
         case GGML_OP_POOL_2D: