Updated Chromium devtools instructions (markdown)

Chromium-devtools-instructions.md

@@ -5,6 +5,6 @@ This process works by getting access to devtools stylesheets using custom themes
 1. install the Fira Code font on your machine
 1. follow steps to install a custom devtools theme, e.g. [zerodarkmatrix](https://github.com/mauricecruz/chrome-devtools-zerodarkmatrix-theme)
 1. find the appropriate stylesheet `stable.css` or `canary.css` in your browser's `Extensions` directory on your file system
-1. edit the section `CodeMirror-code` to include `font-family:"Fira-Code"`
+1. edit the section `CodeMirror-code` to include `font-family:"Fira Code"`
 
 Voila