[cssom] Editorial fixes around exceptions

Author: Simon Pieters

cssom/Overview.html

@@ -1839,7 +1839,7 @@ <h4 id="the-cssrule-interface"><span class="secno">6.4.2 </span>The <code title=
  object does not match the <code title="dom-CSSRule-type"><a href="#dom-cssrule-type">type</a></code> of
  the current object
  <a class="external" href="http://dom.spec.whatwg.org/#concept-throw" title="concept-throw">throw</a> an
- '<code class="external"><a href="http://dom.spec.whatwg.org/#invalidmodificationerror">InvalidModificationError</a></code>' exception.</li>
+ <code class="external"><a href="http://dom.spec.whatwg.org/#invalidmodificationerror">InvalidModificationError</a></code> exception.</li>
  <li><p>Replace the current object with the new object.</li>
 </ol>
 
@@ -2160,7 +2160,7 @@ <h4 id="the-cssstyledeclaration-interface"><span class="secno">6.5.1 </span>The
 <p>The <dfn id="dom-cssstyledeclaration-setproperty" title="dom-CSSStyleDeclaration-setProperty"><code>setProperty(<var title="">property</var>, <var title="">value</var>, <var title="">priority</var>)</code></dfn> method must run these steps:</p>
 <ol>
  <li><p>If the <a href="#css-declaration-block-readonly-flag">CSS declaration block readonly flag</a> is set, <a class="external" href="http://dom.spec.whatwg.org/#concept-throw" title="concept-throw">throw</a>
- an '<code class="external"><a href="http://dom.spec.whatwg.org/#nomodificationallowederror">NoModificationAllowedError</a></code>' and terminate these steps.</li>
+ an <code class="external"><a href="http://dom.spec.whatwg.org/#nomodificationallowederror">NoModificationAllowedError</a></code> exception and terminate these steps.</li>
  <li><p>If <var title="">property</var> is not an <a class="external" href="http://dom.spec.whatwg.org/#ascii-case-insensitive">ASCII case-insensitive</a> match for a supported property that is defined to be case-insensitive,
  terminate this algorithm.</li>
  <li><p>If <var title="">property</var> is not a <a class="external" href="http://dom.spec.whatwg.org/#case-sensitive">case-sensitive</a> match for a supported property that is defined to be case-sensitive,
@@ -2180,7 +2180,7 @@ <h4 id="the-cssstyledeclaration-interface"><span class="secno">6.5.1 </span>The
 <p>The <dfn id="dom-cssstyledeclaration-removeproperty" title="dom-CSSStyleDeclaration-removeProperty"><code>removeProperty(<var title="">property</var>)</code></dfn> method must run these steps:</p>
 <ol>
  <li><p>If the <a href="#css-declaration-block-readonly-flag">CSS declaration block readonly flag</a> is set, <a class="external" href="http://dom.spec.whatwg.org/#concept-throw" title="concept-throw">throw</a> a
- '<code class="external"><a href="http://dom.spec.whatwg.org/#nomodificationallowederror">NoModificationAllowedError</a></code>' and terminate these steps.</li>
+ <code class="external"><a href="http://dom.spec.whatwg.org/#nomodificationallowederror">NoModificationAllowedError</a></code> exception and terminate these steps.</li>
  <li><p>Let <var title="">value</var> be the return value of invoking <code title="dom-CSSStyleDeclaration-getPropertyValue"><a href="#dom-cssstyledeclaration-getpropertyvalue">getPropertyValue()</a></code>
  with <var title="">property</var> as argument.
  <li><p>If <var title="">property</var> is an <a class="external" href="http://dom.spec.whatwg.org/#ascii-case-insensitive">ASCII case-insensitive</a> match for a property of a declaration in the

cssom/Overview.src.html

@@ -1769,7 +1769,7 @@ <h4>The <code title>CSSRule</code> Interface</h4>
  object does not match the <code title='dom-CSSRule-type'>type</code> of
  the current object
  <span data-anolis-spec=dom title=concept-throw>throw</span> an
- '<code data-anolis-spec=dom>InvalidModificationError</code>' exception.</li>
+ <code data-anolis-spec=dom>InvalidModificationError</code> exception.</li>
  <li><p>Replace the current object with the new object.</p></li>
 </ol>
 
@@ -2090,7 +2090,7 @@ <h4>The <code title>CSSStyleDeclaration</code> Interface</h4>
 <p>The <dfn title=dom-CSSStyleDeclaration-setProperty><code>setProperty(<var title>property</var>, <var title>value</var>, <var title>priority</var>)</code></dfn> method must run these steps:</p>
 <ol>
  <li><p>If the <span>CSS declaration block readonly flag</span> is set, <span data-anolis-spec=dom title=concept-throw>throw</span>
- an '<code data-anolis-spec=dom>NoModificationAllowedError</code>' and terminate these steps.</li>
+ an <code data-anolis-spec=dom>NoModificationAllowedError</code> exception and terminate these steps.</li>
  <li><p>If <var title>property</var> is not an <span data-anolis-spec=dom>ASCII case-insensitive</span> match for a supported property that is defined to be case-insensitive,
  terminate this algorithm.</p></li>
  <li><p>If <var title>property</var> is not a <span data-anolis-spec=dom>case-sensitive</span> match for a supported property that is defined to be case-sensitive,
@@ -2110,7 +2110,7 @@ <h4>The <code title>CSSStyleDeclaration</code> Interface</h4>
 <p>The <dfn title=dom-CSSStyleDeclaration-removeProperty><code>removeProperty(<var title>property</var>)</code></dfn> method must run these steps:</p>
 <ol>
  <li><p>If the <span>CSS declaration block readonly flag</span> is set, <span data-anolis-spec=dom title=concept-throw>throw</span> a
- '<code data-anolis-spec=dom>NoModificationAllowedError</code>' and terminate these steps.</li>
+ <code data-anolis-spec=dom>NoModificationAllowedError</code> exception and terminate these steps.</li>
  <li><p>Let <var title>value</var> be the return value of invoking <code title='dom-CSSStyleDeclaration-getPropertyValue'>getPropertyValue()</code>
  with <var title>property</var> as argument.
  <li><p>If <var title>property</var> is an <span data-anolis-spec=dom>ASCII case-insensitive</span> match for a property of a declaration in the