docs: fix markdown lint issues in command docs

cmd/cat/cat.go

@@ -43,15 +43,21 @@ var commandDefinition = &cobra.Command{
 
 You can use it like this to output a single file
 
-    rclone cat remote:path/to/file
+|||sh
+rclone cat remote:path/to/file
+|||
 
 Or like this to output any file in dir or its subdirectories.
 
-    rclone cat remote:path/to/dir
+|||sh
+rclone cat remote:path/to/dir
+|||
 
 Or like this to output any .txt files in dir or its subdirectories.
 
-    rclone --include "*.txt" cat remote:path/to/dir
+|||sh
+rclone --include "*.txt" cat remote:path/to/dir
+|||
 
 Use the |--head| flag to print characters only at the start, |--tail| for
 the end and |--offset| and |--count| to print a section in the middle.
@@ -62,14 +68,17 @@ Use the |--separator| flag to print a separator value between files. Be sure to
 shell-escape special characters. For example, to print a newline between
 files, use:
 
-* bash:
+- bash:
 
-      rclone --include "*.txt" --separator $'\n' cat remote:path/to/dir
+  |||sh
+  rclone --include "*.txt" --separator $'\n' cat remote:path/to/dir
+  |||
 
-* powershell:
+- powershell:
 
-      rclone --include "*.txt" --separator "|n" cat remote:path/to/dir
-`, "|", "`"),
+  |||powershell
+  rclone --include "*.txt" --separator "|n" cat remote:path/to/dir
+  |||`, "|", "`"),
 	Annotations: map[string]string{
 		"versionIntroduced": "v1.33",
 		"groups":            "Filter,Listing",