!10608 Fix msssim supported data type and "Supported Platforms" of api.

From: @liu_xiao_93
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

mindspore/nn/layer/image.py

@@ -338,7 +338,8 @@ class MSSSIM(Cell):
     def construct(self, img1, img2):
         _check_input_4d(F.shape(img1), "img1", self.cls_name)
         _check_input_4d(F.shape(img2), "img2", self.cls_name)
-        _check_input_dtype(F.dtype(img1), 'img1', mstype.number_type, self.cls_name)
+        valid_type = [mstype.float64, mstype.float32, mstype.float16, mstype.uint8]
+        _check_input_dtype(F.dtype(img1), 'img1', valid_type, self.cls_name)
         P.SameTypeShape()(img1, img2)
         dtype_max_val = _get_dtype_max(F.dtype(img1))
         max_val = F.scalar_cast(self.max_val, F.dtype(img1))

mindspore/ops/operations/nn_ops.py

@@ -6435,7 +6435,7 @@ class DynamicRNN(PrimitiveWithInfer):
           Has the same type with input `b`.
 
     Supported Platforms:
-            ``Ascend``
+        ``Ascend``
 
     Examples:
         >>> x = Tensor(np.random.rand(2, 16, 64).astype(np.float16))
@@ -6570,7 +6570,7 @@ class DynamicGRUV2(PrimitiveWithInfer):
         - If `bias_input` is `None` and `bias_hidden` is not `None, `bias_type` is the date type of `bias_hidden`.
 
     Supported Platforms:
-            ``Ascend``
+        ``Ascend``
 
     Examples:
         >>> x = Tensor(np.random.rand(2, 8, 64).astype(np.float16))