[tepl] docs: fix warning

[Sébastien Wilmet <swilmet src gnome org>]

commit 2a2adcced3f19009efb62a6edf6ba1fb73678086
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Mar 29 16:15:50 2020 +0200

    docs: fix warning
    
    About 1 unused declaration.
    
    It's maybe possible to ignore it from the meson.build file, but I'm
    lazy.

 docs/reference/tepl-sections.txt | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/docs/reference/tepl-sections.txt b/docs/reference/tepl-sections.txt
index 0791b4f..6f686cc 100644
--- a/docs/reference/tepl-sections.txt
+++ b/docs/reference/tepl-sections.txt
@@ -5,6 +5,8 @@
 <TITLE>Tepl Initialization and Finalization</TITLE>
 tepl_init
 tepl_finalize
+<SUBSECTION Standard>
+TEPL_H_INSIDE
 </SECTION>
 
 <SECTION>