[css-break] Fix links

Author: fantasai

css-break/Overview.html

@@ -1017,10 +1017,10 @@ <h4 class="heading settled" id="conform-partial"><span class="content"> Partial
         CSS requires that the entire declaration be ignored. </p>
   <h4 class="heading settled" id="conform-future-proofing"><span class="content"> Implementations of Unstable and Proprietary Features</span><a class="self-link" href="#conform-future-proofing"></a></h4>
   <p>To avoid clashes with future stable CSS features,
-        the CSSWG recommends <a href="http://www.w3.org/TR/CSS/#future-profing">following best practices</a> for the implementation of <a href="http://www.w3.org/TR/CSS/#unstable">unstable</a> features and <a href="http://www.w3.org/TR/CSS/#proprietary-extension">proprietary extensions</a> to CSS. </p>
+        the CSSWG recommends <a href="http://www.w3.org/TR/CSS/#future-proofing">following best practices</a> for the implementation of <a href="http://www.w3.org/TR/CSS/#unstable">unstable</a> features and <a href="http://www.w3.org/TR/CSS/#proprietary-extension">proprietary extensions</a> to CSS. </p>
   <h4 class="heading settled" id="conform-testing"><span class="content"> Implementations of CR-level Features</span><a class="self-link" href="#conform-testing"></a></h4>
   <p>Once a specification reaches the Candidate Recommendation stage,
-        implementers should release an <a data-link-type="dfn" href="#vendor-prefix">unprefixed</a> implementation
+        implementers should release an <a data-link-type="dfn" href="http://www.w3.org/TR/CSS/#vendor-prefix">unprefixed</a> implementation
         of any CR-level feature they can demonstrate
         to be correctly implemented according to spec,
         and should avoid exposing a prefixed variant of that feature. </p>
@@ -1176,13 +1176,6 @@ <h3 class="no-num heading settled" id="index-defined-elsewhere"><span class="con
     <ul>
      <li><a href="http://www.w3.org/TR/css-masking-1/#mask-positioning-area">mask positioning area</a>
     </ul>
-   <li>
-    <a data-link-type="biblio" href="#biblio-css-overflow-3">[css-overflow-3]</a> defines the following terms:
-    <ul>
-     <li><a href="http://www.w3.org/TR/css-overflow-3/#valdef-overflow-auto">auto</a>
-     <li><a href="http://www.w3.org/TR/css-overflow-3/#overflow">overflow</a>
-     <li><a href="http://www.w3.org/TR/css-overflow-3/#valdef-overflow-scroll">scroll</a>
-    </ul>
    <li>
     <a data-link-type="biblio" href="#biblio-css-page-3">[css-page-3]</a> defines the following terms:
     <ul>
@@ -1222,10 +1215,13 @@ <h3 class="no-num heading settled" id="index-defined-elsewhere"><span class="con
    <li>
     <a data-link-type="biblio" href="#biblio-css21">[CSS21]</a> defines the following terms:
     <ul>
+     <li><a href="https://www.w3.org/TR/CSS2/visufx.html#overflow">auto</a>
      <li><a href="http://www.w3.org/TR/CSS21/visudet.html#propdef-height">height</a>
+     <li><a href="https://www.w3.org/TR/CSS2/visufx.html#overflow">overflow</a>
      <li><a href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-after">page-break-after</a>
      <li><a href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-before">page-break-before</a>
      <li><a href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">page-break-inside</a>
+     <li><a href="https://www.w3.org/TR/CSS2/visufx.html#overflow">scroll</a>
     </ul>
   </ul>
   <h2 class="no-num heading settled" id="references"><span class="content">References</span><a class="self-link" href="#references"></a></h2>
@@ -1247,8 +1243,6 @@ <h3 class="no-num heading settled" id="normative"><span class="content">Normativ
    <dd>Tab Atkins Jr.; Elika Etemad. <a href="http://www.w3.org/TR/css-display-3/">CSS Display Module Level 3</a>. 15 October 2015. WD. URL: <a href="http://www.w3.org/TR/css-display-3/">http://www.w3.org/TR/css-display-3/</a>
    <dt id="biblio-css-masking-1"><a class="self-link" href="#biblio-css-masking-1"></a>[CSS-MASKING-1]
    <dd>Dirk Schulze; Brian Birtles; Tab Atkins Jr.. <a href="http://www.w3.org/TR/css-masking-1/">CSS Masking Module Level 1</a>. 26 August 2014. CR. URL: <a href="http://www.w3.org/TR/css-masking-1/">http://www.w3.org/TR/css-masking-1/</a>
-   <dt id="biblio-css-overflow-3"><a class="self-link" href="#biblio-css-overflow-3"></a>[CSS-OVERFLOW-3]
-   <dd>David Baron. <a href="http://www.w3.org/TR/css-overflow-3/">CSS Overflow Module Level 3</a>. 18 April 2013. WD. URL: <a href="http://www.w3.org/TR/css-overflow-3/">http://www.w3.org/TR/css-overflow-3/</a>
    <dt id="biblio-css-page-3"><a class="self-link" href="#biblio-css-page-3"></a>[CSS-PAGE-3]
    <dd>CSS Paged Media Module Level 3 URL: <a href="http://www.w3.org/TR/css3-page/">http://www.w3.org/TR/css3-page/</a>
    <dt id="biblio-css-position-3"><a class="self-link" href="#biblio-css-position-3"></a>[CSS-POSITION-3]