docs: instructions to set font in Windows Terminal

Instructions to modify settings.json to set default font.

docs/docs/installation.mdx

@@ -54,6 +54,22 @@ Oh my Posh was designed using [Meslo LGM NF][meslo], but any Nerd Font should be
 Make sure to install fonts system wide to avoid seeing rectangles in your terminal. See this [thread][font-thread] for more context.
 :::
 
+:::caution Setting the default font in the Windows Terminal
+Once you have installed a powerline enabled font, don't forget to tell the Windows Terminal to use it. This can be easily done by modifying the Windows Terminal settings (default shortcut: `CTRL + ,`). In your `settings.json` file, add the `fontFace` attribute under the `defaults` attribute in `profiles`:
+
+```json
+{
+    "profiles":
+    {
+        "defaults":
+        {
+            "fontFace": "MesloLGL Nerd Font"
+        }
+    }
+}            
+```
+:::
+
 ### 2. Install Oh my Posh
 
 <Tabs