[DOCS] Reduce Min / Max -- Reducing empty tensor would result in an u…

…ndefined behavior (openvinotoolkit#20736)

docs/articles_en/documentation/openvino_ir/operation_sets/operations_specifications/reduction/ReduceMax_1.rst

@@ -30,6 +30,8 @@ Particular cases:
 1. If ``axes`` is an empty list, *ReduceMax* corresponds to the identity operation.
 2. If ``axes`` contains all dimensions of input ``data``, a single reduction value is calculated for the entire input tensor.
 
+Reducing empty tensor results in an undefined behavior.
+
 **Attributes**
 
 * *keep_dims*

docs/articles_en/documentation/openvino_ir/operation_sets/operations_specifications/reduction/ReduceMin_1.rst

@@ -30,6 +30,8 @@ Particular cases:
 1. If ``axes`` is an empty list, *ReduceMin* corresponds to the identity operation.
 2. If ``axes`` contains all dimensions of input ``data``, a single reduction value is calculated for the entire input tensor.
 
+Reducing empty tensor results in an undefined behavior.
+
 **Attributes**
 
 * *keep_dims*