Update dsl-reference.md

Removed duplicated lines!

Co-authored-by: Ricardo Zanini <[email protected]>

Author: hirenr

dsl-reference.md

@@ -930,8 +930,6 @@ Enables the execution of external processes encapsulated within a containerized
 | environment | `map` | `no` | A key/value mapping of the environment variables, if any, to use when running the configured process |
 | stdin | `string` | `no` | A runtime expression, if any, passed as argv to the command or default container CMD|
 | arguments | `string[]` | `no` | A list of the arguments, if any, passed as argv to the command or default container CMD |
-| stdin | `string` | `no` | A runtime expression, if any, passed as argv to the command or default container CMD|
-| arguments | `string[]` | `no` | A list of the arguments, if any, passed as argv to the command or default container CMD |
 | lifetime | [`containerLifetime`](#container-lifetime) | `no` | An object used to configure the container's lifetime. |
 
 ###### Examples