chore(docs): Add Enterprise link and update Support link (vectordotdev#17408)

Having Support link to Observability Pipelines has proven to be confusing to users now that it is
separate from Vector. Instead I link to /community and then add an Enterprise link to point to
Observability Pipelines.

Signed-off-by: Jesse Szwedko <[email protected]>

Author: jszwedko

website/config.toml

@@ -143,9 +143,14 @@ weight = 5
 
 [[languages.en.menus.navbar]]
 name = "Support"
-url = "https://www.datadoghq.com/product/observability-pipelines"
+url = "/community"
 weight = 6
 
+[[languages.en.menus.navbar]]
+name = "Enterprise"
+url = "https://www.datadoghq.com/product/observability-pipelines"
+weight = 7
+
 # Footer menu
 [[languages.en.menus.footer]]
 name = "About"