Website Update provider name (#17270)

* edit prvoider name

website/docs/providers/index.html.markdown

@@ -104,7 +104,7 @@ down to see all providers.
     <tr>
     <td><a href="/docs/providers/packet/index.html">Packet</a></td>
     <td><a href="/docs/providers/pagerduty/index.html">PagerDuty</a></td>
-    <td><a href="/docs/providers/panos/index.html">PANOS</a></td>
+    <td><a href="/docs/providers/panos/index.html">Palo Alto Networks</a></td>
     </tr>
     <tr>
     <td><a href="/docs/providers/postgresql/index.html">PostgreSQL</a></td>

website/docs/providers/type/network-index.html.markdown

@@ -29,7 +29,7 @@ in close collaboration with HashiCorp, and are tested by HashiCorp.
 
 [NS1](/docs/providers/ns1/index.html)
 
-[PANOS](/docs/providers/panos/index.html)
+[Palo Alto Networks](/docs/providers/panos/index.html)
 
 [PowerDNS](/docs/providers/powerdns/index.html)