Update templates/pages-sections.md

docs/content/documentation/templates/pages-sections.md

@@ -32,9 +32,12 @@ extra: HashMap<String, Any>;
 word_count: Number;
 // Based on https://help.medium.com/hc/en-us/articles/214991667-Read-time
 reading_time: Number;
-// `previous` and `next` are only filled if the content can be sorted
-previous: Page?;
-next: Page?;
+// `earlier` and `later` are only populated if the section variable `sort_by` is set to `date`
+earlier: Page?;
+later: Page?;
+// `heavier` and `lighter` are only populated if the section variable `sort_by` is set to `weight`
+heavier: Page?;
+lighter: Page?;
 // See the Table of contents section below for more details
 toc: Array<Header>;
 // Year/month/day is only set if the page has a date and month/day are 1-indexed