fix /spec-v1 title heading (#46)

Author: uncenter

src/spec-v1.md

@@ -5,6 +5,7 @@ title: KDL v1 Specification
 
 <!-- TODO: actually make proper sections for this someday? meh, probably pointless. -->
 <section class="kdl-section" id="spec">
+
 # KDL v1 Spec
 
 This is the semi-formal specification for the legacy version of KDL, including