Update pages/glossary/visible-inner-text.md

Co-authored-by: Jean-Yves Moyen <jym@siteimprove.com>

Author: dan-tripp-siteimprove

pages/glossary/visible-inner-text.md

@@ -12,7 +12,7 @@ input_aspects:
 
 The <dfn>visible inner text of a node</dfn> depends on the kind of node. 
 
-The <dfn id="for-text">visible inner text of a [text node][]</dfn> is:
+The <dfn id="visible-inner-text:for-text">visible inner text of a [text node][]</dfn> is:
 -   if the [text node][] is [visible][], its visible inner text is its [data][];
 -   if the [text node][] is not-[visible][], [rendered][], and contains only [whitespace][], its visible inner text is the string `" "` (a single ASCII whitespace);
 -   otherwise, the visible inner text of the [text node][] is the empty string (`""`).