updated Reparameterization weight path & added steps for doing Reparameterization ,also fixed few typos (#552)

* Update reparameterization.ipynb

* Update reparameterization.ipynb

* Update reparameterization.ipynb

* Update reparameterization.ipynb

* Update reparameterization.ipynb

* Add files via upload

* Update userdata.sh

fix typo of yolov7