Make it clear we are referering to JS lib

[skip ci]
diff --git a/README.Rmd b/README.Rmd
index 73e08a0..6affca3 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -7,7 +7,7 @@
 
 [![CRAN status](https://www.r-pkg.org/badges/version/revealjs)](https://CRAN.R-project.org/package=revealjs)
 [![R-CMD-check](https://github.com/rstudio/revealjs/workflows/R-CMD-check/badge.svg)](https://github.com/rstudio/revealjs/actions)
-[![revealjs](https://img.shields.io/badge/revealjs-`r revealjs:::revealjs_version()`-yellow)](https://github.com/rstudio/revealjs/tree/main/inst/reveal.js-`r revealjs:::revealjs_version()`)
+[![reveal.js](https://img.shields.io/badge/reveal.js-`r revealjs:::revealjs_version()`-yellow)](https://github.com/rstudio/revealjs/tree/main/inst/reveal.js-`r revealjs:::revealjs_version()`)
 
 <!-- badges: end -->
 
diff --git a/README.md b/README.md
index aa92ef5..9da1afc 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [![CRAN
 status](https://www.r-pkg.org/badges/version/revealjs)](https://CRAN.R-project.org/package=revealjs)
 [![R-CMD-check](https://github.com/rstudio/revealjs/workflows/R-CMD-check/badge.svg)](https://github.com/rstudio/revealjs/actions)
-[![revealjs](https://img.shields.io/badge/revealjs-4.1.2-yellow)](https://github.com/rstudio/revealjs/tree/main/inst/reveal.js-4.1.2)
+[![reveal.js](https://img.shields.io/badge/reveal.js-4.1.2-yellow)](https://github.com/rstudio/revealjs/tree/main/inst/reveal.js-4.1.2)
 
 <!-- badges: end -->