* Add spec for CTCGreedyDecoder
* Update spec
* Fix spec according to code rewiev
* Update spec
* Update spec
* Update spec according to review
* Update spec
* Update spec
* Update spec
* Update example spec
* Fix space in spec
* Fix spec
* Fix spec according to review
* fix spec
* update spec
* Update spec
* Change format outputs in spec
* Hot fix
* Minor fixes
* Add new attribute for op in spec
* change input
* Add precision to outputs
* Fix input in spec
* Update spec
* Update CTCGreedyDecoderSeqLen_6.md
fix mistakes
* Change first input layout
* fix example
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