Change numpydoc-validation link to stable

Author: stefmolin

index.html

@@ -225,7 +225,7 @@ <h2>Bio</h2>
             <li>
               🚀 Creator of the
               <a
-                href="https://numpydoc.readthedocs.io/en/latest/validation.html#docstring-validation-using-pre-commit-hook"
+                href="https://numpydoc.readthedocs.io/en/stable/validation.html#docstring-validation-using-pre-commit-hook"
                 rel="noopener noreferrer"
                 >numpydoc-validation</a
               >
@@ -792,10 +792,10 @@ <h2>Exercise</h2>
             Look at the setup information for the
             <code>numpydoc-validation</code> hook at
             <a
-              href="https://numpydoc.readthedocs.io/en/latest/validation.html"
+              href="https://numpydoc.readthedocs.io/en/stable/validation.html"
               target="_blank"
               rel="noopener noreferrer"
-              >numpydoc.readthedocs.io/en/latest/validation.html</a
+              >numpydoc.readthedocs.io/en/stable/validation.html</a
             >, and add it to your configuration. Be sure to commit your changes.
           </p>
           <p>