Incorrect builder method referenced

The builder method referred to as `builder.addDefault` is incorrect. Changed to `builder.addDefaultCase`

docs/api/createSlice.mdx

@@ -371,7 +371,7 @@ Similar to `createReducer`, the `extraReducers` field uses a "builder callback"
 
 [examples](docblock://createSlice.ts?token=CreateSliceOptions.extraReducers)
 
-See [the "Builder Callback Notation" section of the `createReducer` reference](./createReducer.mdx#usage-with-the-builder-callback-notation) for details on how to use `builder.addCase`, `builder.addMatcher`, and `builder.addDefault`
+See [the "Builder Callback Notation" section of the `createReducer` reference](./createReducer.mdx#usage-with-the-builder-callback-notation) for details on how to use `builder.addCase`, `builder.addMatcher`, and `builder.addDefaultCase`
 
 ### `reducerPath`