add Crostini installation instructions

README.md

@@ -704,6 +704,43 @@ If you are using a different terminal, proceed with manual font installation.
      ```
      After changing the config run `xrdb ~/.Xresources` to reload it. The new config is applied to
      all new terminals.
+   - **[Crostini](https://chromeos.dev/en/linux)**: Open internal terminal preferences:
+    ```
+    chrome-untrusted://terminal/html/nassh_preferences_editor.html
+    ```
+    Set *Text font family* to:
+     ```text
+     'Source Code Pro', 'MesloLGS NF', 'Powerline For Source Code Pro', 'Noto Sans Mono'
+     ```
+     and *Custom CSS (inline text)* to:
+     ```css
+     @font-face {
+      font-family: "MesloLGS NF";
+      src: url("https://raw.githubusercontent.com/romkatv/powerlevel10k-media/master/MesloLGS%20NF%20Regular.ttf");
+      font-weight: normal;
+      font-style: normal;
+     }
+     @font-face {
+         font-family: "MesloLGS NF";
+         src: url("https://raw.githubusercontent.com/romkatv/powerlevel10k-media/master/MesloLGS%20NF%20Bold.ttf");
+         font-weight: bold;
+         font-style: normal;
+     }
+     @font-face {
+         font-family: "MesloLGS NF";
+         src: url("https://raw.githubusercontent.com/romkatv/powerlevel10k-media/master/MesloLGS%20NF%20Italic.ttf");
+         font-weight: normal;
+         font-style: italic;
+     }
+     @font-face {
+         font-family: "MesloLGS NF";
+         src: url("https://raw.githubusercontent.com/romkatv/powerlevel10k-media/master/MesloLGS%20NF%20Bold%20Italic.ttf");
+         font-weight: bold;
+         font-style: italic;
+     }
+     ```
+     **_CAVEAT_**: If you open the normal terminal preferences these settings will be overwritten.
+
 1. Run `p10k configure` to generate a new `~/.p10k.zsh`. The old config may work
    incorrectly with the new font.