fix up old preprocessor reference syntax

Author: svgeesus

css-fonts-3/Fonts.html

@@ -6365,6 +6365,7 @@ <h3 class=no-num id=normative-references>Normative References</h3>
     href="http://www.ietf.org/rfc/rfc2119.txt">http://www.ietf.org/rfc/rfc2119.txt</a>
    </dd>
    <!---->
+
    <dt id="ref-rfc8081">[RFC8081]
   </dt><dd>C. Lilley. <a href="https://tools.ietf.org/html/rfc8081">The "font" Top-Level Media Type</a>. February 2017. Proposed Standard. URL: <a href="https://tools.ietf.org/html/rfc8081">https://tools.ietf.org/html/rfc8081</a>
   </dd>

css-fonts-3/Fonts.src.html

@@ -2749,7 +2749,9 @@ <h3 id="glyph-selection-positioning">Glyph selection and positioning</h3>
 control. The point at which font selection and positioning happens
 in the overall order of text processing operations (such as
 text transformation, text orientation and text alignment) is
-described in [[css-text-3#order]].</p>
+described in [[CSS3TEXT]],
+<a href="https://drafts.csswg.org/css-text-3/#order">§ Text
+  Processing Order of Operations</a>.</p>
 
 <p>For a good visual overview of these features, see the
 [[OPENTYPE-FONT-GUIDE]].  For a detailed description of glyph processing for

css-fonts-3/Overview.html

@@ -6365,6 +6365,7 @@ <h3 class=no-num id=normative-references>Normative References</h3>
     href="http://www.ietf.org/rfc/rfc2119.txt">http://www.ietf.org/rfc/rfc2119.txt</a>
    </dd>
    <!---->
+
    <dt id="ref-rfc8081">[RFC8081]
   </dt><dd>C. Lilley. <a href="https://tools.ietf.org/html/rfc8081">The "font" Top-Level Media Type</a>. February 2017. Proposed Standard. URL: <a href="https://tools.ietf.org/html/rfc8081">https://tools.ietf.org/html/rfc8081</a>
   </dd>