Update chapters/compatibility.adoc

Co-authored-by: a1exsh <[email protected]>

chapters/compatibility.adoc

@@ -58,7 +58,7 @@ services in a backward-compatible way:
 * Use {x-extensible-enum} (see <<112, rule 112>>), if range is used for output parameters and likely to
   be extended with growing functionality. It defines an open list of explicit
   values and clients must be agnostic or provide default behavior for unknown 
-  values (see <<108, rule 118>>).
+  values (see <<108, rule 108>>).
 * Consider <<250>> in case a URL has to change.