FHx revert "-" to "Family history is unknown/unavailable"

resources/views/app/patient/segment-templates/history_family/edit.blade.php

@@ -66,7 +66,7 @@ if(!$contentData) {
                 <div class="border border-secondary rounded mb-2 p-2">
                     <label class="my-0 d-flex align-items-center">
                         <input type="checkbox" class="my-0 mr-2" v-model="unknown" name="unknown">
-                        <span>-</span>
+                        <span>Family history is unknown/unavailable</span>
                     </label>
                 </div>