doc/userguide: give pcre1 to pcre2 proper heading

(cherry picked from commit c83e3285ae6f5dfd01a750e83ccfd4d9e57b7d47)

diff --git a/doc/userguide/rules/payload-keywords.rst b/doc/userguide/rules/payload-keywords.rst
index 086e11c58ff44f47b92ee3b3587fffbefff1fd66..0f0e2ba97cc8db7ff809be73e5d60d950ff0c0ff 100644 (file)
--- a/doc/userguide/rules/payload-keywords.rst
+++ b/doc/userguide/rules/payload-keywords.rst
@@ -829,7 +829,7 @@ Suricata has its own specific pcre modifiers. These are:
 .. _pcre-update-v1-to-v2:
 
 Changes from PCRE1 to PCRE2
-===========================
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 The upgrade from PCRE1 to PCRE2 changes the behavior for some
 PCRE expressions.