Update cncf status from incubating to graduated

Signed-off-by: Lukas Puehringer <[email protected]>

Author: lukpueh

layouts/partials/home/cncf.html

@@ -1,7 +1,7 @@
 {{ $logo := printf "img/logos/%s" site.Params.logos.cncf | relURL }}
 
 <p class="title">
-  The Update Framework is a <a href="https://cncf.io" target="_blank">CNCF</a> incubating project
+  The Update Framework is a <a href="https://cncf.io" target="_blank">CNCF</a> graduated project
 </p>
 
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