Update number of tools

Author: t-sommer

content/_index.html

@@ -43,7 +43,7 @@ <h1 class="mb-4">The leading standard to exchange dynamic simulation models</h1>
 
       <p class="lead mb-5">
         The Functional Mock-up Interface is a free standard that defines a container and an interface to exchange dynamic simulation models using a combination of XML files, binaries and C code, distributed as a ZIP file.
-        It is supported by <a href="/tools/">200+ tools</a> and maintained as a Modelica Association Project. 
+        It is supported by <a href="/tools/">220+ tools</a> and maintained as a Modelica Association Project. 
       </p>
 
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