Add admintoolkit.io security.txt validator

Author: GitHoubi

projects.html

@@ -6,7 +6,8 @@
 <section class="section">
     <div class="container">
         <table>
-            <tr><th>Project</th><th width="170px">Author</th><th>Activity (as of Aug 1, 2025)</th></tr>
+            <tr><th>Project</th><th width="170px">Author</th><th>Activity</th></tr>
+            <tr><td><a href="https://admintoolkit.io/security-txt-validator-generator/">security.txt Validator/Generator</a> validates and drafts RFC 9116 security.txt files</td><td><a href="https://admintoolkit.io/">admintoolkit.io</a></td><td>live service checked Jul 20, 2026</td></tr>
             <tr><td><a href="https://github.com/Lookyloo/pysecuritytxt">pysecuritytxt</a> A Python Security.txt fetcher and parser</td><td><a href="https://github.com/lookyloo">Lookyloo</a></td><td>last update Jun 19, 2025</td></tr>
             <tr><td><a href="https://github.com/disclose/diosts">A Go scraper that validates security.txt files and outputs them in the disclose.io JSON format.</a></td><td><a href="https://disclose.io">disclose.io</a></td><td>last update May 18, 2025</td></tr>
             <tr><td><a href="https://github.com/oh2fih/securitytxt-tools">securitytxt-tools</a> (Bash)</td><td><a href="https://github.com/oh2fih">Esa Jokinen</a></td><td>last update Feb 11, 2025</td></tr>