Pin revision for LayoutLMForQuestionAnswering and TFLayoutLMForQuestionAnswering tests (#18854)

* Pin revision for tests

* Fixup

* Update revision in models

* Shorten revisions
Co-authored-by: Ankur Goyal <ankur@impira.com>

src/transformers/models/layoutlm/modeling_layoutlm.py

@@ -1285,7 +1285,7 @@ class LayoutLMForQuestionAnswering(LayoutLMPreTrainedModel):
         >>> import torch
 
         >>> tokenizer = AutoTokenizer.from_pretrained("impira/layoutlm-document-qa", add_prefix_space=True)
-        >>> model = LayoutLMForQuestionAnswering.from_pretrained("impira/layoutlm-document-qa")
+        >>> model = LayoutLMForQuestionAnswering.from_pretrained("impira/layoutlm-document-qa", revision="1e3ebac")
 
         >>> dataset = load_dataset("nielsr/funsd", split="train")
         >>> example = dataset[0]

src/transformers/models/layoutlm/modeling_tf_layoutlm.py

@@ -1448,7 +1448,7 @@ class TFLayoutLMForQuestionAnswering(TFLayoutLMPreTrainedModel, TFQuestionAnswer
         >>> from datasets import load_dataset
 
         >>> tokenizer = AutoTokenizer.from_pretrained("impira/layoutlm-document-qa", add_prefix_space=True)
-        >>> model = TFLayoutLMForQuestionAnswering.from_pretrained("impira/layoutlm-document-qa")
+        >>> model = TFLayoutLMForQuestionAnswering.from_pretrained("impira/layoutlm-document-qa", revision="1e3ebac")
 
         >>> dataset = load_dataset("nielsr/funsd", split="train")
         >>> example = dataset[0]