!6762 Update api comments.

Merge pull request !6762 from zhangyi/api_master_fix

mindspore/common/seed.py

@@ -31,9 +31,11 @@ def set_seed(seed):
     Note:
         The global seed is used by numpy.random, mindspore.common.Initializer, mindspore.ops.composite.random_ops and
         mindspore.nn.probability.distribution.
+
         If global seed is not set, these packages will use their own default seed independently, numpy.random and
         mindspore.common.Initializer will choose a random seed, mindspore.ops.composite.random_ops and
         mindspore.nn.probability.distribution will use zero.
+
         Seed set by numpy.random.seed() only used by numpy.random, while seed set by this API will also used by
         numpy.random, so just set all seed by this API is recommended.