Add tip on using developer tools in browsers

doc/getting-started.md

@@ -150,3 +150,4 @@ Links to useful Javascript introductions:
 
 # General tips
 1. The most convenient way to edit the website is by using [VS Code](https://code.visualstudio.com). Indeed, by installing the extension "Live Server", HTML files can be opened by right clicking on them in the "Explorer" and selecting the "Open with Live Server" option. This prompts the file to be opened in the browser. Moreover, every change to the HTML code reflects immediately in the rendered version of the website. Note: since some data is not available in the repository but only on Tetralogy (see [Deployement](https://github.com/SimVascular/vascularmodel/blob/main/doc/deployement.md) and [Data Management](https://github.com/SimVascular/vascularmodel/blob/main/doc/data-management.md) for more information), some parts of the website could be rendered differently in the local and in the deployed version.
+2. Most modern browsers include developer tools that allow inspecting the source code of a particular webpage. Moreover, the style (CSS code) of the webpage can be edited directly within the developer tools, which reflects in immediate changes in how the page is displayed. These developer tools are also useful in highlighting parts of the page when the mouse hovers on the corresponding parts of the source code.