Update link to SDF perl module

Fix git-scm link to use https to avoid redirect

html/devel/tools.wml

@@ -38,7 +38,7 @@ OpenLDAP may find the following tools useful.
 <h3><a name=softdev>Software Development</a> Tools</h3>
 
 <dl>
-<dt><a href="http://www.git-scm.com/">Git</a>
+<dt><a href="https://www.git-scm.com/">Git</a>
  - The Git SCM
 <dd>The source control management system used by OpenLDAP Project to manage
 concurrent development.
@@ -47,7 +47,7 @@ concurrent development.
 <h3><a name=softdoc>Software Documentation</a> Tools</h3>
 
 <dl>
-<dt><a href="http://search.cpan.org/src/IANC/sdf-2.001/doc/catalog.html">SDF</a>
+<dt><a href="https://metacpan.org/release/sdf">SDF</a>
 - Simple Document Format
 <dd>A documentation system developed by Ian Clatworthy.
 </dl>