Merge pull request #245 from mattam82/fix-sint63-link

Fix Sint63 link in stdlib/index.html

Author: andres-erbsen

doc/stdlib/index.html

@@ -127,7 +127,7 @@ <h2>Axiomatized OCaml Primitives</h2>
   <div id="Uint63"><dt><a href="Stdlib.Numbers.Cyclic.Int63.Uint63.html">Uint63</a></dt>
     <dd>OCaml 63-bit unsigned integers and axioms relating them to <code><a href="../corelib/Corelib.Numbers.BinNums.html#Z">Z</a></code>.</dd>
   </div>
-  <div id="Sint63"><dt><a href="Stdlib.Numbers.Cyclic.Int63.Uint63.html">Sint63</a></dt>
+  <div id="Sint63"><dt><a href="Stdlib.Numbers.Cyclic.Int63.Sint63.html">Sint63</a></dt>
     <dd>OCaml 63-bit signed integers and axioms relating them to <code><a href="../corelib/Corelib.Numbers.BinNums.html#Z">Z</a></code>.</dd>
   </div>
   <div id="Floats"><dt><a href="Stdlib.Floats.Floats.html">Floats</a></dt>