Make configure command visible + fix bundle command description (#961)

## Changes
Fixes #936 #937

cmd/bundle/bundle.go

@@ -7,7 +7,8 @@ import (
 func New() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "bundle",
-		Short: "Databricks Asset Bundles\n\nOnline documentation: https://docs.databricks.com/en/dev-tools/bundles",
+		Short: "Databricks Asset Bundles",
+		Long:  "Databricks Asset Bundles\n\nOnline documentation: https://docs.databricks.com/en/dev-tools/bundles",
 	}
 
 	initVariableFlag(cmd)

cmd/configure/configure.go

@@ -123,7 +123,6 @@ func newConfigureCommand() *cobra.Command {
 	If this command is invoked in non-interactive mode, it will read the token from stdin.
 	The host must be specified with the --host flag.
 		`,
-		Hidden: true,
 	}
 
 	cmd.Flags().String("host", "", "Databricks workspace host.")