Fix typo in a parameter name for open llama model
Author: aaalexlit
Pull request: yes

# What does this PR do?

Renames a parameter `use_memorry_efficient_attention` to `use_memory_efficient_attention`

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Comments:
_The documentation is not available anymore as the PR was closed or merged._

Hi @aaalexlit, thanks for opening this PR! 

As the model was part of the most recent release, we'll need to ensure that these changes are backwards compatible with the previous configurations. What I would suggest is popping the previous argument `use_memorry_efficient_attention`  from the config kwargs during initialization, and using that value if passed in, otherwise defaulting to `use_memory_efficient_attention`. 

Thanks for pointing that out, @amyeroberts! Makes all the senses in the world.
I hope I interpreted your recommendation correctly