fix: remove duplicated start of item (#293)

README.md

@@ -145,7 +145,7 @@ Contributions of any kind welcome, just follow the [guidelines](.github/CONTRIBU
 - [R](https://github.com/quarto-dev/quarto-r) - [R](https://www.r-project.org/) interface package to Quarto CLI.
 - [ecodown](https://github.com/edgararuiz/ecodown) - Turn R package documentation `pkgdown` website into a Quarto website.
 - [Simulate colorblindeness](https://rpubs.com/ijlyttle/quarto-cvd-widget) - Observable widget to simulate colorblindness for your whole document.
-- [quartostamp](https://github.com/matt-dray/quartostamp) - An R package An R package containing an [RStudio Addin](https://rstudio.github.io/rstudioaddins/) to insert some useful divs and classes into your Quarto `revealjs` document.
+- [quartostamp](https://github.com/matt-dray/quartostamp) - An R package containing an [RStudio Addin](https://rstudio.github.io/rstudioaddins/) to insert some useful divs and classes into your Quarto `revealjs` document.
 - [ohq2quarto](https://github.com/hrbrmstr/ohq2quarto) - A Rust-based command line utility to turn any [ObservableHQ](https://observablehq.com/) notebook into a Quarto project.
 - [Quartize](https://github.com/hrbrmstr/reveal-qmd) - A Chrome extension to transform any [ObservableHQ](https://observablehq.com/) notebook into a list of downloadable `FileAttachment`s and an in-page Quarto source document.
 - [RStudio & VSCode snippets](https://gist.github.com/jthomasmock/11acebd4448f171f786e01397df34116) - RStudio & VSCode snippets to ease typesetting with Quarto.