Document $enable-grid-classes variable

Closes #19532
[skip sauce]

diff --git a/docs/getting-started/options.md b/docs/getting-started/options.md
index 0a98c40d3a436c1fb6c4cb3639ceaae1f7b031f7..8ed20688805353df9fb9e456ef2ded0b3428a593 100644 (file)
--- a/docs/getting-started/options.md
+++ b/docs/getting-started/options.md
@@ -28,12 +28,13 @@ Do the same for any variable you need to override, including the global options
 
 You can find and customize these variables for key global options in our `_variables.scss` file.
 
-| Variable                    | Values                             | Description                                                             |
-| --------------------------- | ---------------------------------- | ----------------------------------------------------------------------- |
-| `$spacer`                   | `1rem` (default), or any value > 0 | Specifies the default spacer value for our spacer utilities.            |
-| `$enable-flex`              | `true` or `false` (default)        | Swaps `float` and `display: table` styles for `display: flex`.          |
-| `$enable-rounded`           | `true` (default) or `false`        | Enables predefined `border-radius` styles on various components.        |
-| `$enable-shadows`           | `true` or `false` (default)        | Enables predefined `box-shadow` styles on various components.           |
-| `$enable-gradients`         | `true` or `false` (default)        | Enables predefined gradients via `background-image` styles on various components. |
-| `$enable-transitions`       | `true` (default) or `false`        | Enables predefined `transition`s on various components.                 |
-| `$enable-hover-media-query` | `true` or `false` (default)        | ...                                                                     |
+| Variable                    | Values                             | Description                                                                            |
+| --------------------------- | ---------------------------------- | -------------------------------------------------------------------------------------- |
+| `$spacer`                   | `1rem` (default), or any value > 0 | Specifies the default spacer value for our spacer utilities.                           |
+| `$enable-flex`              | `true` or `false` (default)        | Swaps `float` and `display: table` styles for `display: flex`.                         |
+| `$enable-rounded`           | `true` (default) or `false`        | Enables predefined `border-radius` styles on various components.                       |
+| `$enable-shadows`           | `true` or `false` (default)        | Enables predefined `box-shadow` styles on various components.                          |
+| `$enable-gradients`         | `true` or `false` (default)        | Enables predefined gradients via `background-image` styles on various components.      |
+| `$enable-transitions`       | `true` (default) or `false`        | Enables predefined `transition`s on various components.                                |
+| `$enable-hover-media-query` | `true` or `false` (default)        | ...                                                                                    |
+| `$enable-grid-classes`      | `true` (default) or `false`        | Enables the generation of CSS classes for the grid system (e.g. `.col-md-1` etc.).     |