* Progressive layer dropping docs (#499)

* test

* Adding tutorial and news page for pld

* updating the tutorial and posts of PLD

* update the finetune tutorial

* Update PLD tutorial (#512)

* Update installation instructions

* Format fix

* ZeRO tutorial

* Format fixes

* ZeRO-Offload

* ZeRO and ZeRO-Offload tutorials

* Update navigation page

* Format fixes

* Add yuxhe feedback

* Fix blog post link

* Fix OneBit-Adam link
Tweak scheduler example

* Fix date link

* Add DeepSpeed_Adam

* Add PLD tutorial to navigation
Co-authored-by: NShaden Smith <Shaden.Smith@microsoft.com>
Co-authored-by: NJeff Rasley <jerasley@microsoft.com>

* updating the pld docs

* DeepSpeed implementation of PLD (#508)

* DeepSpeed implementation of PLD

* Format fixes

* Formatting fixes

* Fix broken url

* Address PR feedback

* Bump DSE
Co-authored-by: NMinjia Zhang <33713995+minjiaz@users.noreply.github.com>
Co-authored-by: NShaden Smith <Shaden.Smith@microsoft.com>
Co-authored-by: NJeff Rasley <jerasley@microsoft.com>
Co-authored-by: NMinjia Zhang <minjiaz@microsoft.com>