Replaces mentions of registration from help text with login

Author: cveticm

docs/command/atlas-setup.txt

@@ -12,14 +12,14 @@ atlas setup
    :depth: 1
    :class: singlecol
 
-Register, authenticate, create, and access an Atlas cluster.
+Login, authenticate, create, and access an Atlas cluster.
 
 Public Preview: The atlas api sub-command, automatically generated from the MongoDB Atlas Admin API, offers full coverage of the Admin API and is currently in Public Preview (please provide feedback at https://feedback.mongodb.com/forums/930808-atlas-cli).
 Admin API capabilities have their own release lifecycle, which you can check via the provided API endpoint documentation link.
 
 
 
-This command takes you through registration, login, default profile creation, creating your first free tier cluster and connecting to it using MongoDB Shell.
+This command takes you through login, default profile creation, creating your first free tier cluster and connecting to it using MongoDB Shell.
 
 Syntax
 ------

docs/command/atlas.txt

@@ -87,7 +87,7 @@ Related Commands
 * :ref:`atlas-processes` - Manage MongoDB processes for your project.
 * :ref:`atlas-projects` - Manage your Atlas projects.
 * :ref:`atlas-security` - Manage security configuration for your project.
-* :ref:`atlas-setup` - Register, authenticate, create, and access an Atlas cluster.
+* :ref:`atlas-setup` - Login, authenticate, create, and access an Atlas cluster.
 * :ref:`atlas-streams` - Manage your Atlas Stream Processing deployments.
 * :ref:`atlas-teams` - Manage your Atlas teams.
 * :ref:`atlas-users` - Manage your Atlas users.

internal/cli/setup/setup_cmd.go

@@ -659,8 +659,8 @@ func Builder() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "setup",
 		Aliases: []string{"quickstart"},
-		Short:   "Register, authenticate, create, and access an Atlas cluster.",
-		Long:    `This command takes you through registration, login, default profile creation, creating your first free tier cluster and connecting to it using MongoDB Shell.`,
+		Short:   "Login, authenticate, create, and access an Atlas cluster.",
+		Long:    `This command takes you through login, default profile creation, creating your first free tier cluster and connecting to it using MongoDB Shell.`,
 		Example: `  # Override default cluster settings like name, provider, or database username by using the command options
   atlas setup --clusterName Test --provider GCP --username dbuserTest`,
 		Hidden: false,