[cssom] xref and avoid 'may' in non-normative text

--HG--
extra : rebase_source : ddedf9e3bcdd6113a9700aa04a6468e11314c473

Author: Simon Pieters

cssom/Overview.html

@@ -987,8 +987,8 @@ <h4 id="the-cssstylesheet-interface"><span class="secno">6.1.2 </span>The <code
 <p>The <dfn id="dom-cssstylesheet-cssrules" title="dom-CSSStyleSheet-cssRules"><code>cssRules</code></dfn> attribute must return a read-only, live <code><a href="#cssrulelist">CSSRuleList</a></code> object representing the <a href="#style-sheet-css-rules">style
 sheet CSS rules</a>. The same object must be returned on each get access.</p>
 <p class="note">Even though the returned <code><a href="#cssrulelist">CSSRuleList</a></code> object is read-only (from the perspective of
-client-authored script), it may nevertheless change over time due to its liveness status. For example, invoking
-the <code>insertRule</code> or <code>deleteRule</code> operation may result in mutations reflected in the returned object.</p>
+client-authored script), it can nevertheless change over time due to its liveness status. For example, invoking
+the <code title="dom-CSSStyleSheet-insertRule"><a href="#dom-cssstylesheet-insertrule">insertRule()</a></code> or <code title="dom-CSSStyleSheet-deleteRule"><a href="#dom-cssstylesheet-deleterule">deleteRule()</a></code> methods can result in mutations reflected in the returned object.</p>
 
 <p>The <dfn id="dom-cssstylesheet-insertrule" title="dom-CSSStyleSheet-insertRule"><code>insertRule(<var>rule</var>, <var>index</var>)</code></dfn> method performs <dfn id="insert-a-css-rule">insert a CSS rule</dfn> <var>rule</var> as follows:</p>
 <ol>

cssom/Overview.src.html

@@ -917,8 +917,8 @@ <h4>The <code title>CSSStyleSheet</code> Interface</h4>
 <p>The <dfn title=dom-CSSStyleSheet-cssRules><code>cssRules</code></dfn> attribute must return a read-only, live <code>CSSRuleList</code> object representing the <span>style
 sheet CSS rules</span>. The same object must be returned on each get access.</p>
 <p class='note'>Even though the returned <code>CSSRuleList</code> object is read-only (from the perspective of
-client-authored script), it may nevertheless change over time due to its liveness status. For example, invoking
-the <code>insertRule</code> or <code>deleteRule</code> operation may result in mutations reflected in the returned object.</p>
+client-authored script), it can nevertheless change over time due to its liveness status. For example, invoking
+the <code title=dom-CSSStyleSheet-insertRule>insertRule()</code> or <code title=dom-CSSStyleSheet-deleteRule>deleteRule()</code> methods can result in mutations reflected in the returned object.</p>
 
 <p>The <dfn title=dom-CSSStyleSheet-insertRule><code>insertRule(<var>rule</var>, <var>index</var>)</code></dfn> method performs <dfn>insert a CSS rule</dfn> <var>rule</var> as follows:</p>
 <ol>