docs: fix confusing wording (argoproj#9210)

* docs: fix confusing wording

Signed-off-by: Julie Vogelman <julie_vogelman@intuit.com>

* fix: typo

Signed-off-by: Julie Vogelman <julie_vogelman@intuit.com>

Co-authored-by: Saravanan Balasubramanian <33908564+sarabala1979@users.noreply.github.com>
Signed-off-by: Reddy <Rajshekar.Reddy@lowes.com>

docs/walk-through/output-parameters.md

@@ -1,6 +1,6 @@
 # Output Parameters
 
-Output parameters provide a general mechanism to use the result of a step as a parameter rather than as an artifact. This allows you to use the result from any type of step, not just a `script`, for conditional tests, loops, and arguments. Output parameters work similarly to `script result` except that the value of the output parameter is set to the contents of a generated file rather than the contents of `stdout`.
+Output parameters provide a general mechanism to use the result of a step as a parameter (and not just as an artifact). This allows you to use the result from any type of step, not just a `script`, for conditional tests, loops, and arguments. Output parameters work similarly to `script result` except that the value of the output parameter is set to the contents of a generated file rather than the contents of `stdout`.
 
 ```yaml
 apiVersion: argoproj.io/v1alpha1