Update spec.html

Author: zkat

src/spec.html

@@ -1470,7 +1470,7 @@ <h2 id="name-license">
       <h2 id="name-compatibility">
 <a href="#section-1" class="section-number selfRef">1. </a><a href="#name-compatibility" class="section-name selfRef">Compatibility</a>
       </h2>
-<p id="section-1-1">KDL 2.0 is designed such that for any given KDL document written as <a href="spec-v1">KDL
+<p id="section-1-1">KDL 2.0 is designed such that for any given KDL document written as <a href="/spec-v1">KDL
 1.0</a> or KDL 2.0, the parse will either fail completely, or, if the
 parse succeeds, the data represented by a v1 or v2 parser will be identical.
 This means that it's safe to use a fallback parsing strategy in order to support