fix: config escape warning

example_config/example.config.jsonc

@@ -37,6 +37,7 @@
 	// Available keys are;
 	// 1) a-z and A-Z
 	// 2) 0-9
+	// WARNING if using the \ key, it needs to be escaped, e.g. log_section_toggle = ["\\"]
 	// 3) / \ , . # ' [ ] ; = -
 	// 3) F1-F12
 	// 4) backspace, tab, backtab, delete, end, esc, home, insert, pagedown, pageup, left, right, up, down