fix: update links to use HTTPS

Author: jaygiang

docs/_common/secure.mdx

@@ -6,6 +6,6 @@ considered authenticated, authorized, and will be executed. Leaving the APIs in
 When deploying Ory open-source Servers, protect access to their APIs using [Ory Oathkeeper](https://github.com/ory/oathkeeper) or
 a comparable API Gateway.
 
-If you need help, reach out to the community on [Ory Community Slack](http://slack.ory.com/).
+If you need help, reach out to the community on [Ory Community Slack](https://slack.ory.com/).
 
 :::

docs/keto/sdk/05_go.mdx

@@ -27,7 +27,7 @@ Ory Permissions exposes two APIs for integration
 - REST
   - [Permission API](https://www.ory.com/docs/reference/api#tag/permission)
   - [Relationship API](https://www.ory.com/docs/reference/api#tag/relationship)
-- [gRPC](http://ory.com/docs/keto/reference/proto-api)
+- [gRPC](https://ory.com/docs/keto/reference/proto-api)
 
 ## Installation