Docs: Fix misleading section in brace-style documentation (#7996)

It looks like this section was added when the brace-style rule only supported the 1tbs option, and the section hasn't been updated since then.

docs/rules/brace-style.md

@@ -299,7 +299,7 @@ catch(e) { handleError(); }
 
 ## When Not To Use It
 
-If your project will not be using the one true brace style, turn this rule off.
+If you don't want to enforce a particular brace style, don't enable this rule.
 
 ## Further Reading