minor docs grammar fixes (#6889)

docs/source/glossary.rst

@@ -128,7 +128,7 @@ The encoded versions have different lengths:
     >>> len(encoded_sequence_a), len(encoded_sequence_b)
     (8, 19)
 
-Therefore, we can't be put then together in a same tensor as-is. The first sequence needs to be padded up to the length
+Therefore, we can't put them together in the same tensor as-is. The first sequence needs to be padded up to the length
 of the second one, or the second one needs to be truncated down to the length of the first one.
 
 In the first case, the list of IDs will be extended by the padding indices. We can pass a list to the tokenizer and ask

docs/source/quicktour.rst

@@ -214,7 +214,7 @@ Using the model
 
 Once your input has been preprocessed by the tokenizer, you can send it directly to the model. As we mentioned, it will
 contain all the relevant information the model needs. If you're using a TensorFlow model, you can pass the
-dictionary keys directly to tensor, for a PyTorch model, you need to unpack the dictionary by adding :obj:`**`.
+dictionary keys directly to tensors, for a PyTorch model, you need to unpack the dictionary by adding :obj:`**`.
 
 .. code-block::