Update link to Background Images and Icons section (microsoft#2725)

Author: kynapse

doc/cascadia/SettingsSchema.md

@@ -43,7 +43,7 @@ Properties listed below are specific to each unique profile.
 | `colorTable` | Optional | Array[String] | | Array of colors used in the profile if `colorscheme` is not set. Colors use hex color format: `"#rrggbb"`. Ordering is as follows: `[black, red, green, yellow, blue, magenta, cyan, white, bright black, bright red, bright green, bright yellow, bright blue, bright magenta, bright cyan, bright white]` |
 | `cursorHeight` | Optional | Integer | | Sets the percentage height of the cursor starting from the bottom. Only works when `cursorShape` is set to `"vintage"`. Accepts values from 25-100. |
 | `foreground` | Optional | String | | Sets the foreground color of the profile. Overrides `foreground` set in color scheme if `colorscheme` is set. Uses hex color format: `"#rrggbb"`. |
-| `icon` | Optional | String | | Image file location of the icon used in the profile. Displays within the tab and the dropdown menu. See [Images and Icons](./#images_and_icons) below for help on specifying your own icons |
+| `icon` | Optional | String | | Image file location of the icon used in the profile. Displays within the tab and the dropdown menu. See [Background Images and Icons](./SettingsSchema.md#background-images-and-icons) below for help on specifying your own icons |
 | `scrollbarState` | Optional | String | | Defines the visibility of the scrollbar. Possible values: `"visible"`, `"hidden"` |
 | `tabTitle` | Optional | String | | If set, will replace the `name` as the title to pass to the shell on startup. Some shells (like `bash`) may choose to ignore this initial value, while others (`cmd`, `powershell`) may use this value over the lifetime of the application.  |