Editorial: Add links to Unicode Character Database files

spec.html

@@ -34070,7 +34070,7 @@ <h1>String.prototype.toLowerCase ( )</h1>
           1. Let _L_ be ! CodePointsToString(_lowerText_).
           1. Return _L_.
         </emu-alg>
-        <p>The result must be derived according to the locale-insensitive case mappings in the Unicode Character Database (this explicitly includes not only the file <code>UnicodeData.txt</code>, but also all locale-insensitive mappings in the file <code>SpecialCasing.txt</code> that accompanies it).</p>
+        <p>The result must be derived according to the locale-insensitive case mappings in the Unicode Character Database (this explicitly includes not only the file <a href="https://unicode.org/Public/UCD/latest/ucd/UnicodeData.txt"><code>UnicodeData.txt</code></a>, but also all locale-insensitive mappings in the file <a href="https://unicode.org/Public/UCD/latest/ucd/SpecialCasing.txt"><code>SpecialCasing.txt</code></a> that accompanies it).</p>
         <emu-note>
           <p>The case mapping of some code points may produce multiple code points. In this case the result String may not be the same length as the source String. Because both `toUpperCase` and `toLowerCase` have context-sensitive behaviour, the functions are not symmetrical. In other words, `s.toUpperCase().toLowerCase()` is not necessarily equal to `s.toLowerCase()`.</p>
         </emu-note>
@@ -35466,7 +35466,7 @@ <h1>
           </dl>
           <emu-alg>
             1. If _Unicode_ is *true* and _IgnoreCase_ is *true*, then
-              1. If the file <code>CaseFolding.txt</code> of the Unicode Character Database provides a simple or common case folding mapping for _ch_, return the result of applying that mapping to _ch_.
+              1. If the file <a href="https://unicode.org/Public/UCD/latest/ucd/CaseFolding.txt"><code>CaseFolding.txt</code></a> of the Unicode Character Database provides a simple or common case folding mapping for _ch_, return the result of applying that mapping to _ch_.
               1. Return _ch_.
             1. If _IgnoreCase_ is *false*, return _ch_.
             1. Assert: _ch_ is a UTF-16 code unit.