Update shell_completions.md

shell_completions.md

@@ -48,7 +48,7 @@ Zsh:
   $ echo "autoload -U compinit; compinit" >> ~/.zshrc
 
   # To load completions for each session, execute once:
-  $ %[1]s completion zsh > "${fpath[1]}/_yourprogram"
+  $ %[1]s completion zsh > "${fpath[1]}/_%[1]s"
 
   # You will need to start a new shell for this setup to take effect.
 
@@ -66,7 +66,7 @@ PowerShell:
   # To load completions for every new session, run:
   PS> %[1]s completion powershell > %[1]s.ps1
   # and source this file from your PowerShell profile.
-`,cmd.Root().Use),
+`,cmd.Root().Name()),
 	DisableFlagsInUseLine: true,
 	ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
 	Args:                  cobra.ExactValidArgs(1),