New: Add Splunk as customer (#9328)

* New: Add Splunk as customer

* Fix alt

* Add zh version

* Fix order

content/en/about/community/customers/index.md

@@ -60,6 +60,7 @@ Here are just a few of the organizations we know are using Istio. If you want to
     {{< company_logo link="https://www.shop-apotheke.com" logo="./shop-apotheke.svg" alt="Shop Apotheke Europe" >}}
     {{< company_logo link="https://www.skyscanner.com" logo="./skyscanner.svg" alt="Skyscanner" >}}
     {{< company_logo link="https://www.softonic.com" logo="./softonic.png" alt="Softonic S.L." >}}
+    {{< company_logo link="https://www.splunk.com" logo="./splunk.png" alt="Splunk" >}}
     {{< company_logo link="https://www.spotify.com" logo="./spotify.svg" alt="Spotify" >}}
     {{< company_logo link="http://www.theweathercompany.com" logo="./theweatherco.jpg" alt="The Weather Company" >}}
     {{< company_logo link="https://www.tokopedia.com" logo="./tokopedia.svg" alt="Tokopedia" >}}

content/zh/about/community/customers/index.md

@@ -60,6 +60,7 @@ skip_seealso: true
     {{< company_logo link="https://www.shop-apotheke.com" logo="./shop-apotheke.svg" alt="Shop Apotheke Europe" >}}
     {{< company_logo link="https://www.skyscanner.com" logo="./skyscanner.svg" alt="Skyscanner" >}}
     {{< company_logo link="https://www.softonic.com" logo="./softonic.png" alt="Softonic S.L." >}}
+    {{< company_logo link="https://www.splunk.com" logo="./splunk.png" alt="Splunk" >}}
     {{< company_logo link="https://www.spotify.com" logo="./spotify.svg" alt="Spotify" >}}
     {{< company_logo link="http://www.theweathercompany.com" logo="./theweatherco.jpg" alt="The Weather Company" >}}
     {{< company_logo link="https://www.tokopedia.com" logo="./tokopedia.svg" alt="Tokopedia" >}}