Docs `tencent` pages update (#14879)
- updated `Tencent` provider page: added a chat model and document
loader references; company description
- updated Chat model and Document loader pages with descriptions, links
- renamed files to consistent formats; redirected file names
Note:
I was getting this linting error on code that **was not changed in my
PR**!
> Error:
docs/docs/guides/safety/hugging_face_prompt_injection.ipynb:1:1: I001
Import block is un-sorted or un-formatted
> make: *** [Makefile:47: lint_package] Error 1
I've fixed this error in the notebook
