Fixing typo in error message. (#14226)

src/transformers/models/layoutlmv2/tokenization_layoutlmv2.py

@@ -431,14 +431,14 @@ class LayoutLMv2Tokenizer(PreTrainedTokenizer):
                 raise ValueError("text input must of type `str` (single example) or `List[str]` (batch of examples). ")
             if not isinstance(text_pair, (list, tuple)):
                 raise ValueError(
-                    "words must of type `List[str]` (single pretokenized example), "
+                    "Words must be of type `List[str]` (single pretokenized example), "
                     "or `List[List[str]]` (batch of pretokenized examples)."
                 )
         else:
             # in case only text is provided => must be words
             if not isinstance(text, (list, tuple)):
                 raise ValueError(
-                    "Words must of type `List[str]` (single pretokenized example), "
+                    "Words must be of type `List[str]` (single pretokenized example), "
                     "or `List[List[str]]` (batch of pretokenized examples)."
                 )
 

src/transformers/models/layoutlmv2/tokenization_layoutlmv2_fast.py

@@ -235,14 +235,14 @@ class LayoutLMv2TokenizerFast(PreTrainedTokenizerFast):
                 raise ValueError("text input must of type `str` (single example) or `List[str]` (batch of examples). ")
             if not isinstance(text_pair, (list, tuple)):
                 raise ValueError(
-                    "words must of type `List[str]` (single pretokenized example), "
+                    "Words must be of type `List[str]` (single pretokenized example), "
                     "or `List[List[str]]` (batch of pretokenized examples)."
                 )
         else:
             # in case only text is provided => must be words
             if not isinstance(text, (list, tuple)):
                 raise ValueError(
-                    "Words must of type `List[str]` (single pretokenized example), "
+                    "Words must be of type `List[str]` (single pretokenized example), "
                     "or `List[List[str]]` (batch of pretokenized examples)."
                 )