Fix LogitsProcessor documentation (#11130)

* Change duplicated LogitsProcessor to LogitsWarper in LogitsProcessorList document

* Write more detailed information about LogitsProcessor's scores argument

* apply suggestion from review

* style
Co-authored-by: Suraj Patil <surajp815@gmail.com>

src/transformers/generation_logits_process.py

@@ -39,8 +39,8 @@ LOGITS_PROCESSOR_INPUTS_DOCSTRING = r"""
 
             `What are input IDs? <../glossary.html#input-ids>`__
         scores (:obj:`torch.FloatTensor` of shape :obj:`(batch_size, config.vocab_size)`):
-            Prediction scores of a language modeling head. These can be scores for each vocabulary token before SoftMax
-            or scores for each vocabulary token after SoftMax.
+            Prediction scores of a language modeling head. These can be logits for each vocabulary when not using beam
+            search or log softmax for each vocabulary token when using beam search
         kwargs:
             Additional logits processor specific kwargs.
 
@@ -77,7 +77,7 @@ class LogitsProcessorList(list):
     This class can be used to create a list of :class:`~transformers.LogitsProcessor` or
     :class:`~transformers.LogitsWarper` to subsequently process a :obj:`scores` input tensor. This class inherits from
     list and adds a specific `__call__` method to apply each :class:`~transformers.LogitsProcessor` or
-    :class:`~transformers.LogitsProcessor` to the inputs.
+    :class:`~transformers.LogitsWarper` to the inputs.
     """
 
     @add_start_docstrings(LOGITS_PROCESSOR_INPUTS_DOCSTRING)