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 <rishichawda@users.noreply.github.com>

content/chef_compliance_phase.md

@@ -473,11 +473,11 @@ 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`.
+Suppresses output of the Chef InSpec runner. Defaults to `false`. To turn this on, set the attribute `default['audit']['quiet']` to `true`.
 
 ```ruby
 # verbose
-default['audit']['quiet'] = false
+default['audit']['quiet'] = true
 ```
 
 ### reporter