Fix formatting in SECURITY.md

Signed-off-by: Ashley <73482956+ascopes@users.noreply.github.com>

Author: ascopes

SECURITY.md

@@ -7,7 +7,7 @@ significant impact. However, should an issue be identified, I
 will strive to fix these issues as soon as possible.
 
 Fixes will be released as a new version, built from the most
-recent `main` branch for Java 17, and from the v4 branch for
+recent `main` branch for Java 17, and from the `v4` branch for
 Java 11 backwards compatibility. Unless expressly requested,
 no attempt to backport changes will be made.