docs(features): document pinning a tab - #81

Fetching and validating config file...
Successfully validated docs.json
Fetching .mintignore file...
Successfully fetched .mintignore
Fetched all file paths
Fetched 0 OpenApi file(s)
Fetched 0 AsyncApi file(s)
Skipped OpenAPI navigation generation
Skipped AsyncAPI navigation generation
No SDK reference pages configured
No GraphQL reference pages configured
No GraphQL deployment changes required
Persisted 0 generated API page(s)
No GraphQL deployment changes required
Successfully updated API reference metadata.
Updating all paths...
Successfully updated deployment
Successfully saved config
Updating navigation...
Navigation updated
Queued search indexing