text: Title: Add metatags for into the pages docs
  Body: ## 📚 Documentation
  
  Following the instruction from https://docs.readthedocs.io/en/stable/guides/technical-docs-seo-guide.html#use-meta-tags
  
  we should add at least the description for the top pages of each module of kornia. This will help the SEO
  
  - [ ] Augmnetations
  - [ ] Color
  - [ ] Features
  - [ ] Filters
  - [ ] Contrib
  - [ ] Geometry
  - [ ] IO
  - [ ] morphology
  - [ ] enhance
  - [ ] sensors
  - [ ] nerf
  - [ ] x
  etc