docs(action-strip): fix sassdoc

Author: simeonoff

projects/igniteui-angular/src/lib/core/styles/components/action-strip/_action-strip-theme.scss

@@ -4,7 +4,7 @@
 /// @author <a href="https://github.com/simeonoff" target="_blank">Simeon Simeonoff</a>
 /// @author <a href="https://github.com/desig9stein" target="_blank">Marin Popov</a>
 ////
-///
+
 /// If only background color is specified, text/icon color will be assigned automatically to a contrasting color.
 /// @param {Map} $palette [$default-palette] - The palette used as basis for styling the component.
 /// @param {Map} $schema [$light-schema] - The schema used as basis for styling the component.