Merge pull request #1710 from cli/pager-docs

Document `gh config set pager ...` option

pkg/cmd/config/config.go

@@ -19,6 +19,7 @@ func NewCmdConfig(f *cmdutil.Factory) *cobra.Command {
 			- git_protocol: "https" or "ssh". Default is "https".
 			- editor: if unset, defaults to environment variables.
 			- prompt: "enabled" or "disabled". Toggles interactive prompting.
+			- pager: terminal pager program to send standard output to.
 		`),
 	}