Update cheatsheets

tldr/ruby

@@ -11,15 +11,15 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Execute a Ruby script:
 
-`ruby {{script.rb}}`
+`ruby {{path/to/script.rb}}`
 
 - Execute a single Ruby command in the command-line:
 
-`ruby -e {{command}}`
+`ruby -e "{{command}}"`
 
 - Check for syntax errors on a given Ruby script:
 
-`ruby -c {{script.rb}}`
+`ruby -c {{path/to/script.rb}}`
 
 - Start the built-in HTTP server on port 8080 in the current directory:
 
@@ -29,6 +29,6 @@ source: https://github.com/tldr-pages/tldr.git
 
 `ruby -I {{path/to/library_folder}} -r {{library_require_name}} {{path/to/bin_folder/bin_name}}`
 
-- Display Ruby version:
+- Display version:
 
-`ruby -v`
+`ruby {{[-v|--version]}}`