update description

Author: jjallaire

DESCRIPTION.md

@@ -11,7 +11,7 @@ In addition to the core capabilities of Pandoc, Quarto includes:
 5.  Sophisticated layout for panels of figures, tables, and other content.
 6.  Automatic installation of required LaTeX packages when rendering PDF output.
 
-The overall design of Quarto is influenced heavily by [R Markdown](https://rmarkdown.rstudio.com/), however unlike R Markdown the architecture is language agnostic. In it's current iteration, Quarto can render plain markdown, Rmd documents, and Jupyter Notebooks.
+The overall design of Quarto is influenced heavily by [R Markdown](https://rmarkdown.rstudio.com/), however unlike R Markdown the architecture is language agnostic. In it's current iteration, Quarto can render plain markdown, Rmd documents, and Jupyter notebooks.
 
 For additional documentation, see the [Quarto Wiki](https://github.com/quarto-dev/quarto-cli/wiki).