docs(logging): fix 'four' → 'five' category count in fish-config.md prose

docs/fish-config.md

@@ -1382,7 +1382,7 @@ fish_variables.
 ## Opinionated Components (Minimal Mode)
 
 Every opinionated piece of this config is active by default but can be
-switched off through four category opt-out variables, each evaluated via
+switched off through five category opt-out variables, each evaluated via
 __fish_variable_check. Set a variable to any falsy value (0, false, no,
 off, n) to disable its category; erase it or set a truthy value (1, true,
 yes, on, y) to re-enable. Unset means enabled.