Update wording mutations.md

Author: blake-newman

docs/en/mutations.md

@@ -73,7 +73,7 @@ mutations: {
 
 In some scenarios you may not want the middlewares to record the state change. Multiple dispatches to the store in a short period or polled do not always need to be tracked. In these situations is may be considered appropriate to silent the mutations. 
 
-*Note:* This should be avoided where necessary. Silent mutations break the contract of all state changes being tracked by the devtool. Use sparingly and where absolutely necessary.
+*Note:* This should be avoided where possible. Silent mutations break the contract of all state changes being tracked by the devtool. Use sparingly and where absolutely necessary.
 
 Dispatching without hitting middlewares can be achieved with a `silent` flag.