doc: clarify support in SECURITY.md

jonatack · jonatack · commit e4e2b28cf1c8 · 2019-06-07T10:43:05.000+02:00
diff --git a/SECURITY.md b/SECURITY.md
@@ -2,6 +2,8 @@
 
 ## Supported Versions
 
+Versions of Bitcoin Core that are currently supported with security updates:
+
 | Version | Supported          |
 | ------- | ------------------ |
 | 0.18    | :white_check_mark: |
