add link to pluto in readme

README.md

@@ -28,7 +28,7 @@
 
 The MARGO model is described in full in an [accompanying Research Article](https://iopscience.iop.org/article/10.1088/1748-9326/ac243e/pdf), published *Open-Access* in the journal *Environmental Research Letters*. The julia scripts and jupyter notebooks that contain all of the paper's analysis are available in the [MARGO-paper](https://github.com/ClimateMARGO/MARGO-paper) repository (these are useful as advanced applications of MARGO to complement the minimal examples included in the documentation).
 
-Try out the MARGO model by running our [web-app](https://margo.plutojl.org/introduction.html) directly in your browser!
+Try out the MARGO model by running our [Pluto](https://plutojl.org)-based [**web-app**](https://margo.plutojl.org/introduction.html) directly in your browser!
 
 ![Gif of ClimateMARGO.jl being used interactively. The user's mouse cursor clicks on an emissions curve to drag the emissions down. A second panel shows how these emissions reductions result in less global warming, ultimately keeping global warming below a target of 2ºC.](https://raw.githubusercontent.com/hdrake/MARGO-gifs/main/MARGO_interactive_2degrees.gif)