Link the 19 API-key access-review connector docs

Each of these providers ships an API-key connection path and a driver, but
no Registration carried a DocumentationURL, so the console rendered no
"how do I get this token" link on the connect dialog. probo.com now has a
page per provider, so point each Registration at it.

Slugs are passed explicitly rather than derived from the enum, per
accessReviewDocsURL's contract, so BETTER_STACK maps to better-stack and
INCIDENT_IO to incident-io.

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

pkg/connector/provider/one_password.go

@@ -35,6 +35,7 @@ func onePasswordRegistration() *Registration {
 	return &Registration{
 		Provider:                  coredata.ConnectorProviderOnePassword,
 		DisplayName:               "1Password",
+		DocumentationURL:          accessReviewDocsURL("one-password"),
 		ProbeURL:                  "https://events.1password.com/api/v1/auditevents",
 		SupportsAPIKey:            true,
 		SupportsClientCredentials: true,