Varia: Fixes two small typos in button variables array for child themes

varia/sass/child-theme/_config-child-theme-deep.scss

@@ -162,8 +162,8 @@ $config-elements: (
 $config-button: (
 	// Colors
 	"color": (
-		"text": map-deep-get($config-global, "color", "background"),
-		"text-hover": map-deep-get($config-global, "color", "background"),
+		"text": map-deep-get($config-global, "color", "background", "default"),
+		"text-hover": map-deep-get($config-global, "color", "background", "default"),
 		"background": map-deep-get($config-global, "color", "primary", "default"),
 		"background-hover": map-deep-get($config-global, "color", "primary", "hover"),
 	),