learndash-nav-before-section-heading
Action Hook: Fires before the section title (outside wrapper).
sfwd-lms/themes/ld30/templates/widgets/navigation/section.php
learndash-nav-before-inner-section-heading
Action Hook: Fires before the section title (inside wrapper).
learndash-nav-after-inner-section-heading
Action Hook: Fires after the section title (inside wrapper).