docs: fix markdownlint issues in backend command generated output

cmd/backend/backend.go

@@ -156,9 +156,11 @@ func showHelp(fsInfo *fs.RegInfo) error {
 	fmt.Printf("## Backend commands\n\n")
 	fmt.Printf(`Here are the commands specific to the %s backend.
 
-Run them with
+Run them with:
 
-    rclone backend COMMAND remote:
+`+"```console"+`
+rclone backend COMMAND remote:
+`+"```"+`
 
 The help below will explain what arguments each command takes.
 
@@ -172,7 +174,7 @@ These can be run on a running backend using the rc command
 	for _, cmd := range cmds {
 		fmt.Printf("### %s\n\n", cmd.Name)
 		fmt.Printf("%s\n\n", cmd.Short)
-		fmt.Printf("    rclone backend %s remote: [options] [<arguments>+]\n\n", cmd.Name)
+		fmt.Printf("```console\nrclone backend %s remote: [options] [<arguments>+]\n```\n\n", cmd.Name)
 		if cmd.Long != "" {
 			fmt.Printf("%s\n\n", cmd.Long)
 		}

cmd/help.go

@@ -343,12 +343,12 @@ func showBackend(name string) {
 					fmt.Printf("- Examples:\n")
 				}
 				for _, ex := range opt.Examples {
-					fmt.Printf("    - %s\n", quoteString(ex.Value))
+					fmt.Printf("  - %s\n", quoteString(ex.Value))
 					for line := range strings.SplitSeq(ex.Help, "\n") {
-						fmt.Printf("        - %s\n", line)
+						fmt.Printf("    - %s\n", line)
 					}
 					if ex.Provider != "" {
-						fmt.Printf("        - Provider: %s\n", ex.Provider)
+						fmt.Printf("    - Provider: %s\n", ex.Provider)
 					}
 				}
 			}