man: clarify where the settings in type #1 entries are documented

So (maybe weirdly) loader.conf(5) documents both loader.conf and type #1
entries (because they share a similar syntax). But it then only lists
the options of loader.conf. Let's add an explicit hint where to find
the documentation of the type #1 entries.

diff --git a/man/loader.conf.xml b/man/loader.conf.xml
index bfa4e2da90a34624e2d89c83f1630e7806b0a139..b68601cb09e172c1c06d34e476681067be50933a 100644 (file)
--- a/man/loader.conf.xml
+++ b/man/loader.conf.xml
@@ -51,7 +51,12 @@
   <refsect1>
     <title>Options</title>
 
-    <para>The following configuration options in <filename>loader.conf</filename> are understood:</para>
+    <para>The configuration options supported by
+    <filename><replaceable>ESP</replaceable>/loader/entries/*.conf</filename> files are defined as part of
+    the <ulink url="https://systemd.io/BOOT_LOADER_SPECIFICATION">Boot Loader Specification</ulink>.</para>
+
+    <para>The following configuration are supported by the <filename>loader.conf</filename> configuration
+    file:</para>
 
     <variablelist>
       <varlistentry>