Link connector docs in the Add Source dialog

The access review Add Source dialog listed each connector with no
path to its setup documentation. Connectors that have a published
docs page on probo.com now surface a "Documentation" link on the
card, opening the page in a new tab; connectors without a page show
nothing extra.

The link is data-driven from the connector registry: a new
DocumentationURL on the provider Registration, populated for the 12
documented providers via a single accessReviewDocsURL helper, is
surfaced as a nullable documentationUrl on ConnectorProviderInfo and
rendered by the console only when present. This keeps the registry
the single source of truth and adds no client-side provider map.

The links resolve once the probo.com access-review docs pages are
deployed; until then they 404, so deploy the docs alongside this
change.

Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>

pkg/connector/provider/openrouter.go

@@ -31,9 +31,10 @@ import (
 
 func openrouterRegistration() *Registration {
 	return &Registration{
-		Provider:       coredata.ConnectorProviderOpenRouter,
-		DisplayName:    "OpenRouter",
-		SupportsAPIKey: true,
+		Provider:         coredata.ConnectorProviderOpenRouter,
+		DisplayName:      "OpenRouter",
+		DocumentationURL: accessReviewDocsURL("openrouter"),
+		SupportsAPIKey:   true,
 		// OpenRouter authenticates with an organization management
 		// (provisioning) API key presented as Authorization: Bearer, the
 		// default APIKeyConnection scheme. The key is bound to one