* Add R section to cheetsheets

Add R Studio section to cheetsheets page

* Add link to RStudio official cheetsheets resources

Resources website: https://www.rstudio.com/resources/cheatsheets

* Add R cheetsheet: Data Wrangling with dplyr, tidyr

Data Wrangling with dplyr and tidyr cheetsheet (U.1/15) english
Public Url: https://www.rstudio.com/wp-content/uploads/2015/02/data-wrangling-cheatsheet.pdf

* Add R cheetsheet: Domar datos con dplyr y tidyr

Data Wrangling with dplyr and tidyr cheetsheet (U.1/15) spanish
Public Url: https://github.com/rstudio/cheatsheets/raw/master/translations/spanish/data-wrangling-cheatsheet_Spanish.pdf
Scrapped from: https://www.rstudio.com/resources/cheatsheets

* Add R cheetsheet: Domar datos con dplyr y tidyr

- Fix CI/CD errors.
- Data Wrangling with dplyr and tidyr cheetsheet (U.1/15) spanish
Public Url: https://github.com/rstudio/cheatsheets/raw/master/translations/spanish/data-wrangling-cheatsheet_Spanish.pdf
Scrapped from: https://www.rstudio.com/resources/cheatsheets

* Add R cheetsheet: Domar datos con dplyr y tidyr

- Fix CI/CD errors
- Data Wrangling with dplyr and tidyr cheetsheet (U.1/15) spanish
Public Url: https://github.com/rstudio/cheatsheets/raw/master/translations/spanish/data-wrangling-cheatsheet_Spanish.pdf
Scrapped from: https://www.rstudio.com/resources/cheatsheets

* Revert RStudio Data Wrangling cheatcheats (KISS)

- Keep It Simple / apply review suggestions. Thus, I remove "Data Wrangling" cheatsheets because it already are present in the RStudio portal that link points to.
- Fix grammar.