[model_cards] update jimregan/BERTreach card with #s of sentences/tokens

[jimregan]

No description provided.

[codecov]

Codecov Report

Merging #6546 into master will increase coverage by 0.93%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #6546      +/-   ##
==========================================
+ Coverage   78.43%   79.37%   +0.93%     
==========================================
  Files         156      156              
  Lines       28129    28129              
==========================================
+ Hits        22062    22326     +264     
+ Misses       6067     5803     -264     

Impacted Files	Coverage Δ
src/transformers/modeling_tf_openai.py	22.58% <0.00%> (-72.26%)	⬇️
src/transformers/tokenization_xlm.py	16.26% <0.00%> (-66.67%)	⬇️
src/transformers/tokenization_mbart.py	56.25% <0.00%> (-39.07%)	⬇️
src/transformers/tokenization_transfo_xl.py	33.56% <0.00%> (-8.93%)	⬇️
src/transformers/tokenization_auto.py	95.55% <0.00%> (-2.23%)	⬇️
src/transformers/modeling_openai.py	80.96% <0.00%> (-1.30%)	⬇️
src/transformers/modeling_tf_utils.py	86.31% <0.00%> (-0.98%)	⬇️
src/transformers/generation_tf_utils.py	84.96% <0.00%> (-0.76%)	⬇️
src/transformers/modeling_t5.py	83.71% <0.00%> (+0.18%)	⬆️
src/transformers/modeling_utils.py	87.35% <0.00%> (+0.19%)	⬆️
... and 12 more

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