chore: remove invalid alias from project branch (#505)

Author: benPearce1

pkg/cmd/project/branch/branch.go

@@ -13,10 +13,9 @@ import (
 
 func NewCmdBranch(f factory.Factory) *cobra.Command {
 	cmd := &cobra.Command{
-		Use:     "branch <command>",
-		Aliases: []string{"variable"},
-		Short:   "Manage project branches",
-		Long:    "Manage project branches in Octopus Deploy",
+		Use:   "branch <command>",
+		Short: "Manage project branches",
+		Long:  "Manage project branches in Octopus Deploy",
 		Example: heredoc.Docf(`
 			$ %[1]s project branch list "Deploy Web App"
 			$ %[1]s project branch create -p "Deploy Web App" --new-branch-name add-name-variable --base-branch refs/heads/main -