docs: streamline headline structure in JOURNAL_EXPORT_FORMATS.md

Add one general first-level headline and transform
the existing ones into second-level headlines.

diff --git a/docs/JOURNAL_EXPORT_FORMATS.md b/docs/JOURNAL_EXPORT_FORMATS.md
index 5b4517dca1f0c3fc4d4ae0e50bd00ab87b006dc0..037db94f9de5598a9ef4bd0c1587556fee9ac0ba 100644 (file)
--- a/docs/JOURNAL_EXPORT_FORMATS.md
+++ b/docs/JOURNAL_EXPORT_FORMATS.md
@@ -1,11 +1,13 @@
 ---
-title: Journal Export Format
+title: Journal Export Formats
 category: Interfaces
 layout: default
 SPDX-License-Identifier: LGPL-2.1-or-later
 ---
 
-# Journal Export Format
+# Journal Export Formats
+
+## Journal Export Format
 
 _Note that this document describes the binary serialization format of journals only, as used for transfer across the network.
 For interfacing with web technologies there's the Journal JSON Format, described below.
@@ -118,7 +120,7 @@ _CMDLINE=python3 -c from systemd import journal; journal.send("foo\nbar")
 _SOURCE_REALTIME_TIMESTAMP=1423944916372858
 ```
 
-# Journal JSON Format
+## Journal JSON Format
 
 _Note that this section describes the JSON serialization format of the journal only, as used for interfacing with web technologies.
 For binary transfer of journal data across the network there's the Journal Export Format described above.