update quiet mode documentation to reflect actual behavior (#4373)

* update quiet mode documentation to reflect current behavior

this is related to the change that we did to fix quiet mode in chef/chef#14779. in brief, quiet mode wasn't working before. so with the fix we didn't want to break anyone's cofiguration. so quiet mode was changed to be set to false by default. the documentation was also a little confusing since quiet mode is supposed to suppress the output completely vs "controlling verbosity".

Signed-off-by: rishichawda <[email protected]>

* Clarify that this works starting in Client 18.7

Signed-off-by: Ian Maddaus <[email protected]>

---------

Signed-off-by: rishichawda <[email protected]>
Signed-off-by: Ian Maddaus <[email protected]>
Co-authored-by: Ian Maddaus <[email protected]>
Co-authored-by: Ian Maddaus <[email protected]>

Author: rishichawda

content/chef_compliance_phase.md

@@ -473,11 +473,13 @@ default['audit']['profiles']['ssh'] = {
 
 ### quiet
 
-Controls verbosity of the Chef InSpec runner. Defaults to `true`. To turn this off, set the attribute `default['audit']['quiet']` to `false`.
+Starting in Chef Infra Client 18.7, use `quiet` to suppress output of the Chef InSpec runner. Defaults to `false`.
+
+To suppress InSpec runner output, set to `true`:
 
 ```ruby
 # verbose
-default['audit']['quiet'] = false
+default['audit']['quiet'] = true
 ```
 
 ### reporter