docs: Clarify single page template search path

Fixes #2791

docs/content/templates/content.md

@@ -32,14 +32,18 @@ Users can specify the `type` and `layout` in the [front-matter](/content/front-m
 is determined based on the content file’s location. If `type` is provided,
 it will be used instead of `section`.
 
-### Single
-
-* /layouts/`TYPE`-or-`SECTION`/`LAYOUT`.html
-* /layouts/`TYPE`-or-`SECTION`/single.html
-* /layouts/\_default/single.html
-* /themes/`THEME`/layouts/`TYPE`-or-`SECTION`/`LAYOUT`.html
-* /themes/`THEME`/layouts/`TYPE`-or-`SECTION`/single.html
-* /themes/`THEME`/layouts/\_default/single.html
+### Single Page
+
+* /layouts/`TYPE`/`LAYOUT`.html
+* /layouts/`SECTION`/`LAYOUT`.html
+* /layouts/`TYPE`/single.html
+* /layouts/`SECTION`/single.html
+* /layouts/_default/single.html
+* /themes/`THEME`/layouts/`TYPE`/`LAYOUT`.html
+* /themes/`THEME`/layouts/`SECTION`/`LAYOUT`.html
+* /themes/`THEME`/layouts/`TYPE`/single.html
+* /themes/`THEME`/layouts/`SECTION`/single.html
+* /themes/`THEME`/layouts/_default/single.html
 
 ## Example Single Template File