reword definition

spec.html

@@ -347,7 +347,7 @@ <h1>Cyclic Module Records</h1>
             <ins>Cyclic Module Record | *undefined*</ins>
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-            <ins>The first DFS ancestor module of the strongly connected component. For a module not in a cycle this would be the module itself.</ins>
+            <ins>The first visited module of the cycle, the root DFS ancestor of the strongly connected component. For a module not in a cycle this would be the module itself.</ins>
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