[DOCS] Supported Layers update - for 22.3 (#15360)
* LessEqual Not Supported
* port #13997
Update support "Sign" layer to not supported.
Update support "Floor" layer to limited support.
Tickets: 88871 and 88693
* port #13995
Add "Floor" in Known Layers Limitations section.
Add "ConvTranspose" in Known Layers Limitations section.
Add "GatherElements" in Known Layers Limitations section.
Tickets: 88871 and 75208 and 88690
