DOC/MAINT: Fix incorrect URLs in index.html.

Author: WarrenWeckesser

docweb/index.html

@@ -23,8 +23,8 @@
 <h1 id="logo"><img src="images/numpy_financial_logoh.svg" title="numpy-financial logo" alt="logo" /></h1>
 <aside id="asidelinks">
     <h3>Reference Documentation</h3>
-    <a href="https://numpy/numpy-financial/latest/" class="link2">Latest release</a>
-    <a href="https://numpy/numpy-financial/dev/" class="link2">Development version</a>
+    <a href="https://numpy.org/numpy-financial/latest/" class="link2">Latest release</a>
+    <a href="https://numpy.org/numpy-financial/dev/" class="link2">Development version</a>
     <h3>Source Code on GitHub</h3>
     <a href="https://github.com/numpy/numpy-financial" class="link2">numpy-financial</a>
 </aside>