Update maintainer-guide.md

last time fixing italics.  i totally mean it this time.

Signed-off-by: CRob <[email protected]>

maintainer-guide.md

@@ -8,7 +8,7 @@
   - [About this guide](#about-this-guide)
   - [Who's a vulnerability reporter?](#whos-a-vulnerability-reporter-aka-finder)
   - [What does the vulnerability reporter want?](#what-does-the-vulnerability-reporter-want)
-- **[Set up the vulnerability management _infrastructure_](#set-up-the-vulnerability-management-infrastructure)*
+- **[Set up the vulnerability management _infrastructure_](#set-up-the-vulnerability-management-infrastructure)**
 - [Create a vulnerability management team (VMT)](#create-a-vulnerability-management-team-vmt)
   - [Set up report intake](#set-up-report-intake)
   - [Enable private patch development](#enable-private-patch-development)