Use correct terminology

Co-authored-by: jonathan-r-thorpe <[email protected]>

Author: cristian-recoseanu

docs/Controller implementation tutorial.md

@@ -178,7 +178,7 @@ A controller is expected to decode touchpoint information where available and as
 
 As per the [MS-05-02](https://specs.amwa.tv/ms-05-02/latest/docs/Managers.html#class-manager) specification the `Class manager` can be used to discover the properties of any control class and the fields of any data type.
 
-Non-standard control classes can be created by branching off from a standard control class and following the class ID generation guidelines specified in [MS-05-01](https://specs.amwa.tv/ms-05-01/latest/docs/Appendix_A_-_Class_ID_Format.html).
+Non-standard control classes can be created by inheriting from a standard control class and following the class ID generation guidelines specified in [MS-05-01](https://specs.amwa.tv/ms-05-01/latest/docs/Appendix_A_-_Class_ID_Format.html).
 
 Here is an example of a new worker control class called `DemoClassAlpha`. It inherits from [NcWorker](https://specs.amwa.tv/ms-05-02/latest/docs/Framework.html#ncworker) which has a classId of `[1, 2]` and adds the authority key (in this case 0, but would be a negative number if the vendor has an OUI or CID) followed by the index 1.